Atlantis is America in Scripture

Maybe. But that was once thought of the Amazons - now it is thought that the story is probably based on Scythian nomads. Also, everybody knows about Troy, thought to be a myth until somebody went digging on the right spot. Underground cities were once thought to be a myth, until one was found in Turkey. Greek fire - we still don't know its formula, but now we know that it is possible to create something that burns even in water. Ancient flood myths seem to have some basis in fact, the Black Sea deluge may have happened only a bit more than 5000 years ago, and when the last glaciation ended sea levels everywhere did rise pretty fast.

If we ever find something that Atlantis story is maybe based on it is not going to be exactly what Platon told, but there may still be an "Atlantis" waiting to be discovered somewhere (unless it has already been discovered and the story is based on the Santorini eruption).

Whatever may be the truth about that particular myth, still the idea that there may very well have been way more advanced ancient civilizations that is currently accepted in official archeology is starting to look like a fairly likely thing. They probably didn't have technology on our level, no AIs or atomic bombs or spaceships or jet planes, but something a lot more advanced than primitive hunter gatherers is starting to look more and more likely. Earth can be a fairly dangerous and unpredictable place to live on when you are talking about longer time periods, so humans starting civilizations and learning more advanced technology only for all that to be destroyed again and again during hundreds of thousands of years seems quite possible. There would not be much left, and who knows how much is now under sea after that last rise of oceans when that last glaciation ended.