That's true of a lot of Genesis, actually, unless it is viewed allegorically. But the vegetarian part is consistent with a literal reading.
I've always thought of Genesis as allegorical, not literal.
IIRC, (supposedly) Moses wrote the first 5 books of the Bible to answer the questions every human had.
Where did we come from?
What's the reason for our laws?
Who are we as a people? (Jews).
For the record I don't think that people who believe the Noah's Ark story are "stupid, flat-earther anti-science kooks. And worse are probably conservative".
Good grief. I take it as stories, that the people of the time could grasp.
Pretty much every major religion has an Adam and Eve.
It's part of who we are a humans. We WANT to know the reason why we're here.