If you’ve ever seen how he acts with ordinary students who question what he says, it’s quite horrifying. He simply abuses them in a manner I can only describe as sadistic. That is, he clearly enjoys doing it. I don’t think anyone ought to be allowed to get away with that kind of behavior.
Second, Chomsky is immensely important to the radical left. When it comes to American foreign policy he isn’t just influential, he’s basically all they have. Almost any argument made about foreign affairs by the radical left can be traced back to him. That wasn’t the case when he started out back in the late ’60s, but it is now.