A Neologism or Whatever It’s Called
Just to finalize the full description and phrasing, it is:
Hipster-Emo-Indie Dominant Culture Hybrid
That phrase pretty much ‘gets’ and describes this homogenous mass of millions, where each individual among the uniform hybrid mass is afflicted with the delusion of uniqueness, creativity and originality.
Hate to break it to this now-dominant culture, but true insight, giftedness and creativity is very rare. And, to take it even further, it is the Bud drinkers and McDonalds goers who are now the endangered ones, the marginalized ones. So, if they want to truly rally against the current dominant culture and become a genuine anti-establishment movement, they have to abandon the current uniformity.