The Bible was rewritten partially to exclude hidden truths about God and our world

That’s not actually totally necessary, though it’s certain that parts have been removed or purposely mistranslated. However, most people will ignore a lot of what’s written in favor of what is taught (which contains logical fallacies and does not follow scripture).

Angels, Demons, and God exist in some form...

There are people who can detect them. Do not engage with mediums, but they do exist.

All that classy architecture that was abandoned in favor of boring brutalist concrete and steel

This one is maddening. I’ve seen them doing it, actively!