Nothing eliminates more nuance than viewing some of the broadest and most substantial social upheavals in world history through the lens of Great Man Theory. To write off the struggles and sacrifice of millions of people, their successes and their failures, and lay them at the feet of one man. To treat history like this is to believe that the vast majority of its participants are unthinking, uncritical beats of burden with a predisposition to subservience. (The same applies to contemporary "hate the government, not the people" discourse, in which we are to assume the majority of Chinese citizens are helpless, brainwashed victims of totalitarianism)

When you treat history like this, you open up a lot of convenient shortcuts for yourself. You can claim that the October revolution was a much needed intervention, but then drop it immediately after the honeymoon period is over with some hamstrung claim that Stalin was too stupid or too selfish to understand what Lenin was trying to accomplish, or maybe Lenin himself was too stupid to understand Marx and the whole project was doomed. Or that we would be living in fully automated luxury communism right now if Trotsky had taken power.

None of this discourse delves into the actual social or economic conditions involved, nor the theory and practices which emerged from the crucible of revolution. Most importantly, it never makes any attempt to LEARN from this history, so previous mistakes can be avoided, and so proven effective strategies can be developed further and incorporated into contemporary struggles. It is navel gazing bullshit which conveniently discards the whole thing. The only lesson you learn from this treatment of history is that revolution leads to dystopia and that we shouldn't even bother. The takeaway we end up with is that the people who disintegrated the Third Reich and put the first humans into space were better off when they were a backwards feudal monarchy.

And today, among the English-speaking online left, any time somebody comes along and argues "You know what, maybe we shouldn't stick the entire history of the USSR or the PRC into a furnace. There are some valuable lessons in here." they get derided as a Tankie by some vote blue no matter who sicko. Lots of people throwing the word "authoritarian" around who have never had to confront the sharp end of the US state once in their lives.