No, he's not anti-Christian. He works very closely with Michael O'Fallon of Sovereign Nations (see yt channel), for example. He is anti-"Christian Nationalism" (as we all should be, IMO). Lindsay is personally agnostic the last I heard. He is an old school liberal; his beef was partly that no persons should destroy the property of others (regardless of either's religion), but more particulalry that the left is baiting Christians into violence in order to justify "the rising danger of Christian Nationalism" and thus get gov support to crack down on it -- and all Christians would fall into that dragnet. An attack like that is giving the left exactly the ammunition they want. "The real action is your target's reaction."

Lindsay is not a Christian, so is not exactly an "ally" but is certainly what Francis Schaeffer called a "co-belligerent" against the forces of collectivism / the modern "woke" who are explicitly anti-liberal (as in classical liberalism).