Actual question in title. This guy defends communism through and through and points to war atrocities allegedly committed by the US Military in various conflicts including Vietnam, Iraq and therefore paints the entire US Military as one of the bad guys as are "all the capitalists like bezos, Bill Gates, musk, Trump". "Climate change most important issue of our time." Xi is doing good, and the whole genocide in Xinjiang was justified to root out terrorism and extremist thought.
Anything you try to assert and back up, he'll fire back with a salon, vice, or Wikipedia article.
But he does also believe that 9/11 was a CIA job and the whole Afghanistan thing wasn't a big deal since Taliban seems like the good guys now. (However, the twist there is that therefore doesn't believe Biden did anything wrong)
It's like he got half of it right but the other half completely wrong.
If he's defending Communism by pointing to the self-proclaimed enemies of Communism (Real Americans) doing bad things sometimes, then he doesn't have a point. That's a false binary and a fallacy. Even if America is "evil", that doesn't make Communism the proper response by default. There are a LOT of other philosophies to consider, even if you personally don't like American capitalism.
If he's defending Communism because he actually believes in Communism principles or is suggesting that Communism has been a successful model in either real or hypothetical situations, I'd have to look at the individual argument to know how to respond to it. I don't like to respond to a hypothetical argument.
Also, don't be shocked that there are liberal "conspiracy theorists." Liberals were looking to paint Bush as capable of 9/11 before Trump ever seriously entered politics. It tends to be easier to uncover potential conspiracies in people you don't like, and there were plenty of Kerry voters.