Fake fan

Someone who claims to be a die hard fan but criticizes the team more than anyone when they struggle.
Probably has not ever been to a game.
Sings their pump up songs so everyone knows they know them.
Probably switches teams after a few years when their team loses public support. Probably because it’s harder for them to get clout

Max: Did you see Kinger last night?
Kyle: yeah, he was being a fake fan about Lebron
Max: yeah he’s never even been to a game