When you use advanced technology you also use advanced materials.
If you have an electricity at the level you use it like a regular tool, you inevitably have a lot of other interesting things too.
There are too little out-of-time artifacts to be certain about all that advanced ancients theory. Either most are purposedly hidded from our knowledge by some conspiracy, either not found yet, either does not exist.
However there is still a small possibility that ancient artifacts, like all that strange ugly jewelry and decorations are too advanced tech for us to understand how it works and how to use it. But something tells me that probability is very low.
When you use advanced technology you also use advanced materials.
If you have an electricity at the level you use it like a regular tool, you inevitably have a lot of other interesting things too.
There are too little out-of-time artifacts to be certain about all that advanced ancients theory. Either most are purposedly hidded from our knowledge by some conspiracy, either not found yet, either does not exist.
However there is still a small possibility that ancient artifacts, like all that strange ugly jewelry and decorations are too advanced tech for us to understand how it works and how to use it. But something tells me that probability is very low.