I think that the argument presented at Prager University was the idea that at one point there was nothing, and then there was profusion. This "big bang" phenomena does not just happen once at the beginning, when time, matter, space and the physical universe in general veritably explodes into existence, but is a pattern that repeats itself, life from no life, profusion of life forms in a relatively short period of time, like an explosion, the explosion of intelligence even.
I don't see the form of the argument as an either/or scenario when it comes to evolution, or God, but that evolution itself is much too simplistic to explain the reality that science itself reveals to us.
Rejection of polytheism is the rejection of the anthropomorphism of forces of nature. Nature itself is seen as impersonal, unfeeling, unintelligent, just like evolution is defined to be.
But the bigger point is that such gradualism does not begin to describe a fine-tuned universes where things literally explode themselves into existence.
Evolution does not appear to be all that there is.