Indeed, he may hold unpleasant beliefs, and I'm sure you understand that to support a claim as serious as that of antisemitism, more evidence outwith a couple of discrete quotes is needed.
The reason why I queried you regarding Chomsky is that I have a passing familiarity with some of his work and there is nothing in any of it that I have read where there's any inkling of antisemitism that I have perceived. Rather the opposite in fact. He is, however, precisely the type of person both due to his academic nature and his political views who is likely to be misrepresented, honestly or otherwise.
I believe that I have, for instance, found the tract from which your second quote originates, and, if it is correct identified (looking for the original and not a quote), it has been taken completely out of context from a thought experiment expansion and very much not a statement of what Chomsky thinks.
I'll get back to you.
I will follow the trails indicated.