Some combination of
https://conspiracies.win/p/11RNy8tZCy/conspiracy-of-conspiracies/
and
https://conspiracies.win/p/11RO7SpyUw/theory-why-they-keep-aliens-them/
Wide spread assumption is that elites made some deal with aliens around 1970 and elites trying to fulfill their part of deal taking over planet and population.
What if things are completely opposite?
Shortly - more advanced aliens find out that humans are not developed enough for full-scale contact. However, elites have some knowledge of and may be contacts with aliens. Aliens told that it looks like Earth will be ready for contact in 21 century. IDK, some invention or some parameter of society development, or both, based on trends that was observed in science and society.
During that conversation with aliens elites made a good face, but after aliens departure they come to obvious conclusion, that joining of Earth into interstellar community will mean loss of higher power status for elites, as I wrote earlier. As soon as existence of any more developed aliens will be revealed it will immidiately mean that Earth elites are not highest power for humans and humans could flee from the elites control, and since space is endless, even if Earth elites somehow eventually reach you, you always could flee slightly further from them. But with high probability it would be just their complete and final fall.
So, they decided to stop scientific progress and do not allow social trends to develop freely to avoid passing alien's thresholds.
Take a look at diagrams at https://wtfhappenedin1971.com/ f.e. If pre-1970 trends would have been untouched, today we would live in completely different and significantly better world.
Same with science, continuing pre-1970 trend of growing number of fundamental inventions, that flying cars people dreamed about in 60s could have become already obsolete tech today.
Elites do not try to close the deal with aliens. They try to avoid creating conditions that could make that deal possible.
Presumably, elites know the date of next check meeting with aliens and trying to supress anything that could allow that deal.
That is why elites actions looks so illogical. They don't try to do something, they try to destroy as much as possible by any means.
Again, if elites had a deal with aliens to enslave humanity, their masters certainly would have provided some kind of textbook and assistance and highly probably nobody even noticed what is really happening, and their actions would not look chaotic and insane.
But if they just tryin to destroy all things aliens account as civilisation development, it would look exactly as it looks - imbecile trying to play wack-a-mole with population, destroying one thing or another, without any logic and plan.
And all that just to keep their status of highest power over humans and keep us under their total control.
It's a sound theory. But technology was already being suppressed much earlier than the 70's. Tesla comes to mind. Your theory though would also fit the suppression of some historical anomalies - did aliens come to earth at a much earlier stage, and turn their noses up at us then too?
There are too many hype around Tesla. Just think a little - all "regular" Tesla inventions was replicated by amateurs without any porblem long time ago, even those that are just toys, like Tesla coil. But none of his "wonder" inventions, many like to talk about, was ever replicated, nor by scientists, nor by amateurs. Why everybody think, that if Tesla made some working invention, than all other his inventions should work? Many inventors who really invented something real, then fall into fakes and permanent attempts to find investors using fakes. Or just was not successfull in inventing something else, none of their other ideas work.
Fact that something was drawn on paper or patented does not mean that this is real and will work.
Also, it is pretty usual thing, when you have dozen of failed ideas per single working one.
I think Tesla history is heavily used to distract curious people with hands in right place from running on their own and forcing them to spend endless time for attempts to replicate things that was just failed ideas or even fraud.
I disagree with this. John Hutchison has replicated various effects Tesla produced. It's not a specific invented machine, but use of different machine and technology in connection with each other. Various effects that were witnessed and written about by New York high society people Tesla invited to observe back in the day - making metal turn "gelatinous" in his hand while remaining cold , for example - were reproduced by the amateur John Hutchison in the 70's/80's. Also Soviet scientists have written about such effects. I think the whole "false hype" around Tesla is a result of the effort to suppress or ignore the effects he could produce - for whatever reason - very difficult to reproduce, dangerous to existing paradigm, extremely dangerous in general.
Then, anybody could replicate them, especially today. But nobody succeed.
Whatever stories anybody will tell about Tesla "wonders", it is all complete bullshit unless they could be replicated by anybody who want to do it.
If tech could not be replicated - it is bullshit, fraud and scam.
Seriously, I tried to replicate a lot of stuff that was declared "breakthrough, hidden tech". None worked. During discussions with believers on dedicated forums, who insist that that next wondrtech definitely works, I quckly catch them lying about some small details known only to those who tried to build that stuff, that make obvious that none of that believers ever tried to replicate that things. They just push their bullshit, nothing more.
So with that Hutchinson. If he succeed, than where is all that successful replications here and there, where is complete howtos, where is inevitable improvements in that wondertech, where is practical use of it by those who replicated it? Nothing? So Tesla with Hutchinson could GTFO with their fraud.
Do you ever seen any youtube video where some "replicator" show how he practicaly use some wondertech at home or farm for most obvious usecases? None.
And it is not only Tesla. There are loads of that crap around - all that Searl engines, Meyer cells and so on. Even Searl itself - "Look, I have a infinite power generator! Here on the table! Look, it is spinning!". And somehow he can't show how he power his house with it and don't pay anything to electric company. And so on. Endless waterfall of bullshit, secrets, asking for donations, likes and views.
Didn't you notice, that when YouTube stopped payments to Russian youtubers for views due to sanctions, you can't find a single newly made Russian-originated video of yet another "free energy" or "fuelless generator"? Not a single one since February. It's a miracle, indeed!
Question everything, especially things you want to believe.
Seriously, imagine that you really made some "free energy" device. Will you ask for donations, likes or whatever then? if you do, why? You just earned millions for all your future life, because now you dont need to pay for electricity, gas and fuel anymore. Why would you not release full reproduceable howto for everybody, and for what hell you could need that donations or views? And don't tell me about "want to become billionare", because you just told that it is "prohibited" and "not allowed" tech that powers that be will supress immidiately. You can't become "billionare" selling the tech TPTB don't like. You could become only a corpse. The only way to survive for you is to release complete and working howto of how to build your device.
It's more complicated than that. First of all, you would have to believe you could replicate them. There was a campaign to label him a con man, so many just hide behind that and say all his videos and results are fake. This is the main barrier, because it's a considerable investment of time and money even for the most minute, unimpressive replication. He spent years collecting second hand military surplus equipment obsessively, he always bought new second-hand equipment throughout and tried using many different things. He was not organized. He had no committed set-up. and he could try for weeks without results. He's also made many apparatice from scratch himself.
Unfortunately he was a kook who never kept records, he did it by "feel", sound & memory - it was haphazard, amateur stuff, but he still did it. He really used to plug in headphones with a long cable and hold out a pole into the test area and listen for the changes.
Anyway, there are clear videos of the effects, and I certainly think they are genuine. However now he's gone kind of insane so no logical how to method can be written by him. He pretty much stopped being able to achieve the effects in the 90's.
There was some interest in his work from both the Canadian and American military. But they had no patience for the madman. And in the end he could not comply with Canadian safety measures and after an accidental fire that almost burned down the entire building, his entire lab was confiscated by the Canadian Government while he was in Japan.
Yes, a lot of Free energy stuff on the internet is kooky and fake, but a few achievements are real. It's much more mundane, time and effort and money consuming to achieve, as far as I can see, than average person is willing to endure. And there is no funding available for it unless you could produce on demand in a moments notice. So no, not just anyone can replicate it - it will take some unique circumstances and a particular type of person. 2 such types of people in 100 years. Perhaps there will be more.
there is no appetite for it, nor patience. Simply disbelief. When hutch did it he could be at it for days before he got some small "blink and you miss it" effect. it could be the middle of the night and often was. Total all-consuming obsession is required. There was a period where he could reproduce somewhat on demand, but even then hours of tuning and fiddling with field generators was needed. And he got lucky that a rich guy was willing to invest because his son, an electrical engineer, was working with hutch and witnessed effects. But it was never switch on one machine and sit back and watch and wait. And he was not able to explain in such a way that others could easily reproduce.
These days he's a cross-dressing madman, people wonder if his experiments destroyed his mind somehow, making him unable to replicate further.