You don't have to be a member of the Fandom community to be a fan of something
It annoys me when it's assumed I am a member of the larger Fandom when I say I'm a fan of a TV show, musical act, movie franchise, etc.
I can have watched all 15 seasons of a show from the pilot to the final episode without being able to quote and site every episode. I don't need to go to Cons and make the show my entire personality.
I can enjoy a band or musician and have listened to all of their albums from their debut album without knowing what track is on what album or been front stage for every tour.
I don't need to know all the cute nicknames the fandom has for all members and actors.
You're allowed to be a long-time fan of something without knowing every minute detail of said thing and have a paranormal relationship with it.