Class struggles

A whiny, vague post that goes off on perceived self-absorption in indie rock. Was the Garden State soundtrack really that influential? More importantly, did this post fall through a time warp from 2004? What does the following paragraph mean? (PopMatters)

But while Tommy NewYorkBigwig used to pimp people’s art from everywhere else, now he’s only invested in the kids down the street. The music sounds like it has nothing to prove because the kids making it have nothing to prove. It enacts leisure because its authors come from a background of leisure. And the kids performing onstage don’t care about earning your attention or respect because they’re not accustomed to earning anything. It’s an entire artistic movement of, for, and about the bourgeoisie at a time when everyone in America is living anything but the lifestyle of the rich, famous and bored.