This is absurd. Anarchists come in a variety of stripes, from those who prefer free associations and a minimal state to those who froth at the mouth at any mention of social organization. Simply because a few self-proclaimed anarchists have attacked Chomsky as a liberal reformist shows only how limited their understanding of his thought is.
I transcribed Chomsky's famous "Notes on Anarchism" several years ago and placed it in the public domain with Chomsky's permission. You can find it at:
http://www.worldmedia.com/archive/other/notes-on-anarchism.html
along with an interview with Chomsky on anarchism:
http://www.worldmedia.com/archive/interviews/9612-anarchism.html
and an interview in which Chomsky touches on Marxism:
http://www.worldmedia.com/archive/interviews/9505-anarchism.html
Once you peruse the above, you should be convinced that Justin Schwartz is absolutely clueless.
Bill