Could you point me to any UFO wistleblower from govenment, military, science, etc. areas that revealed exact technical details about UFO. I mean really technical - not somehing like "it could hover silently!" or "It could turn at 90° at high speed!" or senseless drawings or descriptions of exterior or interior. Something like exact weight, power source output in Watts, maximum thrust in kN, something like "Power source connected to the engine with a cable/pipe/whatever with diameter/cross-section of ... <- exact value"? Anything like that?
First thing that engineer, scientist, military will do with unknown technology is to measure it. And it is not about dimentions, it is about all possible parameters. Also he definitely will try to find and write out distinct parts interconnections and think out a way to categorise different distinct parts, even if he have no clue what it is and how it works. And that are the things that any real whistleblower from aforementioned institutions will wistleblow. They just can't be unaware of that things if they really tried to use, work on, reverse engineer or study that UFOs.
What I find very suspisious, apart of complete absense of known technologies that appeared from nowhere without any traces of preceding technologies, is that there are no any technical details about UFOs governments presumably possess from any known to me wistleblower.
But I think there's a lot of fake horseshit because it pays.
Look into the drone program, and current fighter planes, and also next gen.
Look no further at UFOs.
They're even flying UFOs, round discs, making USOs. They are making re-entry vehicles for resupplying upper orbit, importantly for bang accross the globe, out of orbit, line up, whoosh, around an hour anywhere. They have vertical thrust take off hitting hypersonic speed, and it can maneuver at almost any angle. Also supposedly underwater hitting huge speeds. They were designing drones that can do both, underwater and flight. They dive, and surface. Next gen fighters have swarm, 100s of mini drones, countermeasures, it has plasma countermeasures, that is complete mirages and decoys, and it has 1 to 3 support drones, on a fighter hitting hypersonic speeds with ridiculous maneuvering. The craft are in a range of designs, but they all look like the triangle UFO, or some are even saucer.
As far as ancient mysticism is concerned. It's a hot topic. But we are stranded. Where is our return? Where is the tech? Nothing but fantasy with a strong inclination towards the supernatural and the divine. Because it provides us with reasoning and purpose. We look up, we need more, we see more.