This is just a "right brain"/nonlinear thought, as it were, or a question, too. I suspect it may be on point.
Why is there such resistance to biological evolution in some circles? To me, it seems more than religious dogmatism, when the objection comes from being appalled at being compared to an animal.
Is it progress to realize how much like an animal mankind is, progress to embrace our true nature? How paradoxical, how like devolution, to shed a pretension that mankind is apart from nature.
Maybe that's got something to do with it, the couth versus uncouth, and maturity as the shedding of unsophisticated distinctions. Maybe that's why rock and roll was so shocking to some.