This is an interesting theory but not complete IMO. If there is much truth at all to these ancient stories…
Nimrod was the son of Cush. It goes Noah -Ham -> Cush -> Nimrod.
https://en.wikipedia.org/wiki/Nimrod
As far as my research is concerned Noah had three sons. Japheth, Ham and Shem. Ham father of Cush., >>2821810, >>2953600
Then Cush is father of Nimrod and where Canaan is formed and the Pagan rituals are revitalized post flood?
Was ancient knowledge found on the two pillars where Hermetic wisdom and Gnosis was revitalized and implemented in a new land? Perhaps the timelines are messed up…
This is speculation and conjecture on my behalf as I haven't been able to do enough research to definitely put together a strong argument.
However, your post makes an interesting theory to larger forces at play, completing forces of Good vs Evil which dates back much further then Noah and the flood.
The Logos or natural order vs. Chaos of ancient Egypt.