all fandoms have aspects of religion. Whether your obsessing over sports like football, hockey or whatever, or if its a game, tv show, comic etc, they all have things very similar to religion. I noticed it when I used to be part of the Brony fandom. A lot of like, tumblr fandoms even "literally" worship the characters. I know many homestucks call Andrew Hussie, the creator of the comic, god, though mostly as a joke. Same goes for Celestia in the brony fandom. Other fandoms do it too, though its always as a "joke."
I think a lot of people in the modern day use fandoms as a substitute for religion, which...is very interesting to me and a personal research interest. I dont think this inherently means fandoms are bad though; the "religious" aspect of them isn't necessary to liking that given thing or participating in the fandom. its just how some of the more zealous fans tend to act.