I mean it's all ideologically motivated, just different ideologies. Cringe pagans and atheists can also make an alright noise sometimes too:)

I think the best Christian metal I've found are mortification tho:

https://youtu.be/FljaRw5AxsU

And maybe Crimson thorn:

https://youtu.be/_oeb5RtGB_4

Not sure I wouldve guessed either were a Christian band had I gone in cold. Hard to tell.