This has been going over on my FB for a week now. Most of the comments seem to be basically: "Yeah, why don't those younger guys know who John Waters is?"
I don't think this is really any different than past generation gaps, except perhaps that people used to share a less fragmented group pop cultural reference point--with all the options now available to people it's less likely that young gay guys grew up watching the same late night Douglas Sirk movie showings--but by the same token there probably are a few more guys who know about some obscure 70s punk band.
Added to that I think is also that so many gay men were lost due to AIDS so there is a gap there. Still, I think the kids are alright (and shouldn't the kid in this piece be cast by someone about ten years younger?) I know I probably will get flamed on here for saying that, considering that I've been told by several members on here that I could not have knowledge of anything that happened before my time--but that's kinda the point. You can have it either way.