The thing is, the 'geek girl' stereotype is something that almost never happens, but as far as I understand it the stereotypical hipster is not uncommon.
It is possible to 'like' something the wrong way: namely where you do not actually like it. Hipster hate isn't about being different, it's about a perception of dishonest attention-seeking.
Isn't this the same justification that's used to shame the "pseudo" geek girls?
As far as I am aware, the discussion of 'fake geek girls' has mostly come from MRA-types that spend most of their time failing to see women as people. So any particular instance of 'fake geek girl' is almost certainly the commenter being an ass and wrong. But, again, as far as I am aware, there are no large groups going around being 'anti-hipster' in situations where it doesn't fit. So instances of being 'anti-hipster' are often accurate.
Also, pop culture is not dead #twerking #beiber #hashtags
This happens in any insular subculture. Do I even need to mention the "geek girl" bullshit?
The problem has quickly become that this revulsion has also played into the jock-centric bullying of anyone who dares to be different--"my football coach won't let me grow my hair long so now let me go punch that faggot with the plastic frames" sort of crap. Any indie community that still exists needs to rid itself of all this baggage for that reason alone.
Whatever utility the word "hipster" had as a pejorative, if any, is gone. Internet killed pop culture and it's dead to stay. The most popular cartoon character now is effing Grumpy Cat. Anyone should consider anyone else using "hipster" as an offhand pejorative to be no greater than a classroom bully, no different than calling someone a dweeb in the 1980s.