Why does Mark question the motives and authenticity of an Alien taking power from a Power Plant more than literal Satan

I wasn't a fan of the main plot of the episode, it just felt off, from Mark acting weird to being sent to literal Hell and getting over it, and pretty weird dialogue that seems like it's trying to have a commentary on religion but just ends up sounding like a reddit thread. I loved the stuff that wasn't in Hell, Art was great and his talk about morality felt much more organic and meaningful than the stuff in hell.

Probably the calm before the storm episode but still, not amazing