Not a big fan of the mud flood theory. There was a shift of gears in the 15th century imo.
As for the Bible, it was heavily edited. Old languages are a lot more versatile than current ones. There is a zero chance of understanding its text without revelation because words had dozens of meanings which are now lost in translation. This goes for all sacred text that I know of regardless of religion.
However, I don't deny an inspiration from a higher being for such texts. I'm just making the claim it wasn't God who dictated any of them. There is an obvious distinction between the creator of all things and the administrator of our reality. Some call it the Demiurge. I prefer Mr. Administrator.
The same way many lunatics claim they're Satoshi Nakamoto. Similarly, the admin reached a high enough level to control stuff, yet no high enough to create life.
All in all, the worst mistake I see done over and over again is to overlap Lucifer with Mr Admin. If Jesus is the middle way, it's basic geometry that there are two kinds of extremes. On one end is materialism and at the other is the demented desire to escape matter without understanding its purpose.
My two sats.