The closest thing I could find about this was that in one of his books he acknowledges partial financing of this one book from a small prize from a Russian internet forum. That’s all I could find. Chomsky and Sachs supposedly fall under this umbrella too, according to you. Presumably criticizing American foreign policy is equivalent to Russian propaganda in your view.
Nor are any of the conspiracy theories you attribute to them something I could find evidence of.
My point there in my comment about these three holding these views was that this isn’t simply Russian fake news. It’s held by some reputable scholars as well. Your response is to claim these scholars too are Russian propagandists, bolstering your case with outright fabrications.
The US leadership openly refers to Ukraine as a proxy war. I do think it’s worth listening to critics of US foreign policy in that context, and not limiting our information diet to European politicians.