Curious. An odd assertion for a movie when that sentiment is juxtaposed against the need to "preserve all fauna" in the coming flood. Indeed, if God meant humans to be vegetarians, or even worse Veeeeegahnnnns, then the purpose of having animals on this Earth serves what? Are we to assume that God's intentions according to liberal Veeeeegahnnnns is that humans (with no souls apparently) are to be the food of animals then? And, moreover, thus having then been relegated to 'food' for the animals, just exactly why does God feel it necessary to punish humans (again, who apparently don't have free will and no souls per liberal veeeeghannnnns). They are food! Why 'destroy' anything at all then? It just don't make no damn sense if you aks me.
From what the Bible indicates, mankind before the Flood was non-meat eating. It was after the Flood that God gave the permission to be meat-eaters.
There were many things that changed after the Flood. The rainbow is another example. Before the Flood, the land was watered from a mist coming up. At the beginning of the Flood and afterwards, there was rain - hence the “rainbow” and God’s promise of no world-wide flood again. The rainbow was God’s seal on his promise.