Because the gods where actually there and saw it becoming alive...?
Hey, it's your theory, you should be the one to come up with a reason why it should work your way instead of the way we've been told!
Wait what?
So you are contradicting things that were explicitly stated in comic? But you don't have any reasoning other than "maybe perhaps" and can't even formulate a coherent way it could work within the story? Cool theory, bro.