If you don't expect your opinion to matter to anyone, why do you keep repeating it?

And telling other people they're not real fans is so rude and grating. You don't get to decide what they like. You don't get to decide what's important to them. You can say you don't think they're behaving like GOOD fans, but you. do. not. get to tell them they're not fans. It's implying you know them better than they know themselves.