Mao and Stalin (though to a noticably lesser extent) actually had insightful things to say though. Mao’s essays on epistemology are genuinely really fantastic. And that can be true alongside all of the show trials and sparrow murder which was genuinely really fucking bad.
Pol Pot meanwhile admitted to never having really ever read Marx, and his faction of the Communist Party of Cambodia was more concerned about Khmer ultranationalism and anti-Vietmamese sentiment that had been brewing over the course of French colonialism, then with anything to do with building socialism.
So, I guess what I’m saying is that we ought to take a nuanced, grounded view of historic socialisms that accounts for their success and failures, and doesn’t fall into either mindless exoneration of awful shit, nor reflexively screeching “TANKIE TANKIE!!!” Every time anything vaguely socialist oriented comes up in discussion.