And they are pissed off at the band Korn for making a reference to devolution without citing their sources, which for musicians is no big deal of course. But it should make you remember that Devo actually expoused the belief that humanity is progressively becoming regressive and less and less, more and more. It was the intellectual reason I started listening to them (also I rather dig synthesizers).
Frankly, I think getting angry at a band like Korn for pretending to pioneer a new philosophical concept is less rewarding than getting amused at them for pretending to pioneer a new musical genre or champion a new adolescent emotion. Either way it's like making fun of a clown; I mean, it's a clown after all, and all their songs are punchlines.