What a consummate jackass - not an artist, not an innovator, just a sleazy rip-off gutter dweller. He's essentially a fore-father for the mentality perpetrated by "The Fat Jew" on Twitter, who is, rightfully, being excoriated for making a business model of profit by way of theft. If Jeff Bezos or Elon Musk wanted to achieve something useful in the space race, they'd find a way to grab both those guys, shove them in a rocket on a one way trip to the moon, broadcasting a camera feed back to Earth, and with just enough water to make it there before they have to turn to cannabalism as a last resort before their inevitable, well-deserved end.
By Richard Prince's logic, I should totally be entitled to steal his identity and empty his bank account in the name of performance art. He doesn't believe in copyright? Fine. I don't believe in the illegality of stealing from thieves.