Oh Christ. The last time I saw him was in that 'the more you ignore me the closer I get song' and on Beavis and Butt-Head. He went from Zoolander supermodel guy to Grandpa Simpson fucking hard.
I think they're really a collection of grudges, obsessions, emotional reactions and personal vendettas. The dude does not seem to have a well-organized worldview.
A friend of mine saw him at some big music fest in Chicago a few years ago, I forget which one. Anyway, before he would take the stage all the food vendors had to stop serving meat for the time before, during, and after his performance, as per his contract.