Actually, I once heard from a Deacon that Genesis 1 is a letter addition to the Testament than the rest of Genesis. In the original version of the story, Elohim did not create the Earth. That makes sense, because Elohim was originally just the storm god in a pantheon of other deities, some of whom were more important than Him.

I think My interpretation of Abrahamism is closer to the older versions, from before it developed monotheism.

Why then is the Roman conception of the universe invalid in Rome? Did they not inhabit a different universe?

Cause they marched off to other places and forced those places to be Rome. The Romans did a lot of the early work in destroying the precolonial multiverse. A lot of the later work was done by the British Empire. We used to have a multiverse. Different people in different lands were able to have entirely different cultures and metaphysics. They constructed consensus reality in very different ways. Then the Christians said no.