It's very fashionable in the hacker community to treat Christianity as an anti-science establishment, but that's really a brash generalization that isn't even supported by facts. You'll even find a lot of evangelical Christians who are stauch proponents of the theory of evolution.
It's a rather tired meme that Evangelicals are engaging in an all-out assault on the scientific establishment, when that simply isn't true. There is a large, vocal evangelical contingent that espouses creationism, but 'evangelicals' are a much more complex and noisy bunch than one might expect.
To put it simply: I've been to quite a few churches that were direct examples of the overload culture that PG is writing about. Some of them were evangelical, most of them had congregations whose political beliefs are in no way uniform. And again, evangelical is in no way a synonym for right-wing. PG is overreaching here. But, it was a footnote, so I've already gone on more than is justified.