First, I fall back to my own definition of Evil: an action taken based on an unquestioned belief.

So, "no" is obviously the answer because Chomsky carefully questions almost everything.

As for "everything he says about America is bad"; I don't accept that as a given. The people who do are probably defining America as the fanatically competitive and corrupt market system that is only one part of America, and that is a process, not a country or a society. Does it define America in the eyes of the world? To some extent, yes. I don't think it defines America for everyone and all questions, though. By "America", of course, I am referring to the USA (just to be clearly defined).

Is it possible that everything Chomsky says about America is bad? Sure, but it's also likely that everything he criticizes can be separated by subject matter into precise categories that are a small part of the whole.