Yeah, a lot of satanic folk, or just those that like the aesthetic, dont actually believe in a hell or satan. Its often a middle finger to the religious that want to control their lives.

My wife grew up in a Jewish household that celebrates Christmas. They never took any religion seriously. She giggles when she has to go to a catholic mass for a wedding or something. She didn’t grow up with it and its as silly to her as Satan worship or witchcraft is to other people.

What you consider normal is mostly a function of exposure.