If modernist naturalism were true there would be no objective truth outside of science. In that case right and wrong would be a matter of cultural preference or political power and the power already available to modernists ideologies would be overwhelming.
Evolutionary naturalism takes the inherent limitations of science and turns them into a devastating philosophical weapon: because science is our only real way of knowing anything what science cannot know cannot be real.
Another important historical factor is the fact that this already very simple religion was further simplified and purified by the early philosophers of ancient China. Our first great philosopher was a founder of naturalism and our second great philosopher was an agnostic.
I love my early movies but naturalism is an artist's early style. Now I want to deal with feelings dreams an acceptance of irrationality.