There are probably more men and women in the world who wear jerseys- then men who just sit and talk about sports logos. Wearing jerseys is more main-steam than just talking about a team's logo and uniform design just from the standpoint of aesthetics.
I enjoy this site because I wear jerseys. If I didn't have that interest I wouldn't give it the time of day. IMO adults attending- chasing TV/movie stars and dressing up at all of those comic-con or fanboy events is weird. But they are probably more mainstream now than our little community here- so who am I (or anyone else) to say what is acceptable? To each his own.