No, ugh. I mean his fandom. How he was spamming all of his brony stuff out of the Mega-Thread.
So you refer to his trait (being a fan of the show) as a fandom. I think we're having a miscommunication as a result lol
FYI, the Fandom is usually used to refer to all fans of a given thing, as opposed to the trait one has of being a fan.
His particular... obsession with the show is what you're referring to, right?