Lucifer challenged God's power and that's a good thing. As an archetype of rebellion and knowledge, it's fine.

Occultism in general has been pretty sus until very recently. There's always been spaces dominated by right wing ghouls thinking magic is going to make them more powerful and rich. Really weird sexist shit that can be positive in the right hands but was used as "we don't need women because men can magically embody the feminine" kind of thing. Even today you have to watch out because fascists like this stuff too.