What were Darren Aronofsky's motivations in filming the story of Noah and the Great Flood?
It seems likely he intended to provide a parable about the coming horrors of man-made climate change (and, to a lesser extent, to promote veganism). Of course, it isn't a very interesting or affecting parable. That happens when you beat people over the head with relentlessly bombastic storytelling and self-righteous moralizing. And I'm someone that thinks we need to do something about climate change!
Who is Aronofsky trying to reach with this parable? Right-wing climate change deniers? I shouldn't think so. The whole thing with them is that whatever happens to the Earth's climate is in God's hands. If things go bad, it's God's punishment - not against them, but against everyone else - and is warranted. These are people that yammer endlessly about the end times and want their apocalypse now, now, now. For many of these folks, a Great Flood isn't a threat, but a fantasy.
These people aren't running from the great cleansing, Darren - they all think they're Noah.