I think it’s normal and healthy, if it’s not taken too far. Same goes for mainstream religion.

Religion is ultimately about answering the unanswerable. Why are we here, the meaning of life, what happens after we die, that kind of thing. Nobody is able to answer these questions with evidence, so therefore any established religion has just as much credence as whatever you come up with yourself.

Denying objective reality or restricting the rights of others is where you have to draw the line though. That’s where things become weird.

Regarding mixing christian and pagan rites, there’s a fascinating history of how catholicism in particular incorporated pagan beliefs into their own pantheon. If it’s okay for them to pick and choose what to believe, then the same goes for everyone else too