I’m gonna believe what makes sense. You made a claim which didn’t fit with what I know about Chomsky, and left a citation that doesn’t support that claim. Your claim does not make any sense to me. It’s perfectly within my understanding of Chomsky for him to say “These people we vilified weren’t quite that bad. We vilified them for our own political aims, and fabricated stories as needed to support that. The truth is much more nuanced than media made it out to be.”
And Chomsky doesn’t just make empty claims or “believe what he wants”. He usually cites sources from within the US government, like published State Department memos stating the position he’s claiming they had.