I am very rarely the type of person to tell another how to “correctly fan” when it comes to their favorite team. I have a brother who I would consider a casual fan and selected a favorite team based on uniform color. Totally fine by me.
I have a sister who I believe just got a tattoo of a running joke in our football chat group and scours stats maybe more than I do. And the answer is “no.” I’m not explaining the tattoo because that’s a conversation for another time and place.
What I’m getting at is that fans assemble for an infinite number of reasons and at all intensity levels.