Perhaps this is stereotyping but perhaps though as with Pride etc. the image of gay is one of high camp whereas in reality I expect that gay men and women by and large go around looking much like their hetero counterparts. Having the camp version put up front and centre all the time must be annoying for them.
I can count 9 gays, 3 lesbians and 1 bisexual amongst my friends and family (and that's just the ones I'm aware of). None of them are camp at all.