I mean, you can use that same logic on the US government, even Democrat run ones, which have supported genocides in the past and even current ongoing ones, and have tried to stomp out left movements, been racist, sexist, and homophobic. But people have still supported the US and the Democratic party and called themselves leftist. The point is, I assume as I'm not a CCP Stan myself or anything, is to give critical support to back an actual socialist project and give a counterweight to a pure single superpower world (esp. When that superpower has destroyed or undermined almost every left project it can in the world). Critical support meaning you pick out the good from the bad, supporting the good and criticizing the bad. China actually puts a leash on its billionaires = good. But they seem to be forcing some cultural integration of Uyghurs = bad. But they're providing lots of housing and cheap EV's = good. But they can have bad working conditions = bad. But they're helping support economies and infrastructure in the global South with the Belt and Road project = good. But they keep doing that shit with territory in the south seas = bad. But they seem to have a long-term plan for implementing communism that they are actually following = good. And so on. I do think some people go too far in being CCP supportive, but I also think some people on Lemmy go too far the other direction, and think everyone that gives the slightest critical support to China or analyzes some US propaganda on China a bit before swallowing it is a CCP troll.

In the end, it's a mixed bag, but I do think there is some worth to not having a single hegemonic superpower in the world, so other leftist countries or colonized global south ones have alternative access to allies, trade, and support without bowing down to the US and their often reactionary policies. Cuba for example was doing pretty good until the Soviet Union fell and basically the only market became the western, US-controlled one that they had been mostly sanctioned the hell out of. I wish it was a better country than China, but hopefully they improve their social issues as they improve economically, which tends to be the pattern. I just wish they'd stop doing the aggressive maneuvers near the Philippines and Vietnam.