from the comments to the article linked...
Very true. A nice discussion of how hipsters leech meaning from culture appears here (
http://newyork.timeout.com/articles/features/4840/why-the-hipster-must-die#ixzz0y7KY1t3k), but the meat of it is this:
"Under the guise of 'irony,' hipsterism fetishizes the authentic and regurgitates it with a winking inauthenticity . . . . As the hipster ambles from the thrift store to a $100 haircut at Freemans Sporting Club, [the aesthetics of fringe movements and ethnicities] are assimilated—cannibalized—into a repertoire of meaninglessness, from which the hipster can construct an identity in the manner of a collage, or a shuffled playlist on an iPod."
There's another good article over here,
https://www.adbusters.org/magazine/79/hipster.html. This one makes note of my personal favorite hipster trend, where hipsters display their fierce Palestinian nationalism by sporting keffiyehs.