But yes, there is definitely has a decidedly Marxist, historical revisionist cant underlying some of his work.
The man is a senescent old fool, so I really don't see why anyone with a modicum of intelligence would take anything he has to say seriously.
"Actually, what Vonnegut does is a curious admixture of fiction, non-fiction, and vivid, almost fantastic details filtered through a weird, sci-fi version of our society in continous memoir of sorts."
Interesting description. You should be a writer!