Update I could probably justify this comment by making a point other than, "young whipper snappers be cray, yo."
Hipster hate has been around for years. I find that it comes from young, self-conscious people posturing and picking on other people based on the way they look, the music they like, and other trivial things. It's cruel to pick on other people for something so utterly trivial. There's nothing thinly veiled about it, IMO: it's just bullying and it seems to be a phenomenon I strongly attribute to young people.
Maybe that makes me an old, ignorant, ruddy-duddy but I seriously haven't really heard someone over the age of 30 or so make snarky remarks about how so-and-so is such a hipster douchebag. They'd get funny looks and people might think, "What is this, high school!?"
I think someone should make this a youtube video. Old people picking on other old people for liking obscure bands young people have never heard of in forty years. Calling them hipsters (a term that originated in the 50s beat movement, no?).