More on that cunning (Michael) Ruse ... and that First Amendment issue

Michael Ruse has a post over on the Huffington Post site in which he says, pretty much in so many words, that current evolutionary theory and current Roman Catholic theology are directly inconsistent with each other. He suggests a means by which the latter can change to bring itself into line with science, but that's not going to be my point here. I'm not even going to comment on the question of whether the inconsistency he identifies is a genuine one: I'm inclined to think that it is, but the point I want to get to will stand whether that's correct or not, so let's not get bogged down with it.

My point is, first, that Ruse is claiming that there is an inconsistency between current science and a widely-maintained religious position. Even if the official Catholic doctrine changed, the kind of human exceptionalism under discussion would still be held by some people on religious grounds. Given that is so, why is it not a breach of the First Amendment if current evolutionary theory is taught in US schools? I mean, I don't think it is. But why doesn't Ruse think it is, given his views on the First Amendment that I got stuck into over here. I'm really, truly puzzled by this. It's less clear to me than ever how Ruse's theory of the First Amendment is supposed to work.