'Pretentious' as a term of common criticism from post-adolescents today

I think this description of Joanna Newsom's Ys accurately describes why the term 'pretentious' is used so often to criticise things that appear different:

'Newsom returned this year with Ys, an album that will do nothing to allay these criticisms. In an indie culture that rewards well-turned mediocrity and can be suspicious of ambition, the record's long compositions, ornate orchestral arrangements, and antique lyrics are guaranteed to be dismissed as pretentious by many. And they are-- symbolically dense and anachronistically stylized, Newsom's songs expect a lot from the listener. But whether or not the music is pretentious is beside the point. The debate between Newsom admirers and detractors seems to revolve around one question-- does she mean it, or is she selling us snake-oil? I don't claim to have gotten to the bottom of Joanna Newsom in a 45-minute conversation, but she left me with the impression of being an uncommonly graceful and articulate person, not a collection of tics and fancies; a person who, regardless of what she's doing, always means it.'

http://www.pitchforkmedia.com/article/feature/39700-interview-joanna-newsom