After seeing this thread, I saw the article in question in Barnes and Noble and read it. I'll try to summarize the author's problems with the inauthenticity hipsters in my own words:
Unlike previous "subcultural" movements where the majority of participants were comprised of 'artist' types and creators, many "hipsters" are in fact bankers/lawyers/etc. Further, the hipster movment "cannabilizes" (author's word) stylistic aspects of previous countercultural movements such as hippies/punks/grunge/etc, without any acknowledgement of the meaning or the previous contexts of those countercultures. Author also noted the "safeness" of hipsters in comparison to subcultures of previous generations, which, i suppose, had more of an edge.
Basically, hipsters are the gentrification of subcultures.
Though, personally, I dont see "cannabilizing" of subcultures as anything new--major labels have been doing it forev.
Interestingly enough, appeared in TIME OUT NEW YORK, although editor did mention Swift's "A Modest Proposal" in his letter.