You can find plenty of communist criticisms of Stalin. They appear on this forum from time to time.
Maybe try engaging earnestly and give specifics. You may get even more context from us that might change your view. Or, hell, we might even agree with you. Stalin did good things. He also did some shit things.
Instead, you're relying off of the Stalin boogeyman myth that even the US government has admitted is false.
There are plenty of anarchists doing good on-the-ground work. And there are plenty of communists who are terminally online. As much as we make fun and get frustrated with anarchist analysis and their lack of historical knowledge, I don't think we can characterize either movement as a whole of spending the majority of their time dunking in comment sections. In my own experience with anarchists and other left tendencies there is not nearly as much infighting as you would be led to believe online. Plenty of people are doing the work and have their eye on the larger contradiction, which is opposing the bourgeois state.
The anticapitalist movement is still reemerging in the West after decades of McCarthyism and it's going to take time for people to become more learned about socialist history and ideology. Communism is getting more popular, albeit slowly. I personally think that the popularity of anarchism in the West is a phase that is temporary. Experience will lead people to Marxism.
Conditions in America are currently worse than the Great Depression by pretty much every metric related to working people. And the media is blatantly pretending it's not happening.
Because honestly, the US owes so many reparations that it wouldn't possibly be able to afford to pay them and still exist. The point needs to be driven home to people that reparations will require the dismantling of the empire, not the continuation of it.
The dialogue in this next US election is gonna be really ugly for Asian-Americans.