Well, I know you've all personally heard people saying things like this before. You've seen it on websites like "stuff white people like". You're now seeing another article about it. Don't you think that maybe there's something to it beyond a few random exceptions? You truly believe that your explanations perfectly account for ALL of the perceptions that people are having?
I genuinely believe that there is a somewhat sizable epidemic of liberal phoniness. I wouldn't be annoyed if someone disagrees with the extent to which this happens. But to pretend it's not out there seems kind of annoying. And strikes me as though the people disagreeing with it are guarding their own interests (based on how they've acted).