If you're shopping a general theory about morality that encompases Christian morality and non-Christian morality, I don't see what there's to be worked up about.

Unless you haven't actually explored the world beyond your backyard. I have typically found Haidt's moral foundations to be pretty interesting but because he's always sold it as cross-cultural. So this seems a bit odd, honestly.

Extremely likely to be a virtue-signaling publicly stunt, TBQH.