I'm not super well versed in current right wing psychology but I think it's because those types consider themselves paleoconservatives, especially the ones who lean into pseudo-intellectualism. They at least use the name as a dogwhistle for fascism, I remember in one of the subreddits that got banned with chapo they were openly discussing how as fascists they could tell other people they were paleoconservatives as a cover. I guess once you buy into that identity you somehow end up being anti war, to own the (((neocons))).