The original post was in response to the meme's statement that people hate capitalism but don't know that they hate capitalism, saying that there are few people on Lemmy who don't specifically blame the problems of capitalism on capitalism (in short, "fuck capitalism, all my homies hate capitalism"), with the criticism I read being directed at pro-authoritarian regime people, not pro-communism. The fact that people took criticism of those who handwave away the wrongdoings of oligarchies because they espouse to be socialist/communist as an attack on communists says more about them than it does the OP.
A perfect summary of their point and mine that I realized after being reminded that r/theDonald was a thing is that Lemmy is so leftist that our version of r/theDonald would be r/thePutin. Although, with the current state of the Republican party, that might be a more conservative leaning sub than one would expect...