Was Damore a religious fanatic? He was engaging in a rational, scientific discussion (merits of the attempt aside, that was the stated goal).
What about anti-vaccine people? What about there-is-no-good-GMO people?
I think it's inconsistent at best to think the biggest enemy of science is religious fanatics. In fact, the biggest enemy of science these days is bad science. Lack of replicated results, for example.