lmao. I unironically believe this though.
The more you concentrate power, the harder it is to keep bad actors from abusing said power.
What makes you think the power over those billion+ people is all "concentrated"? Could it be (gasp!) that the power is largely distributed among those people who overwhelmingly support that government? This is just capitalist-realism-brained misunderstanding of how communist parties work.
Most Americans approve of capitalism. Does that make it good too?
No, but that's certainly not what makes it bad.
Then what would? If the fact that China is doing good in the world is not enough for you to think "it a force for good in the world" then what does it need to do? Oh, I forgot, you think "all nation states are bad by definition" and unironically believe that the more people a government represents, the more evil it is. So in order for China to be "a force for good in the world" China simply has to cease to exist. Got it. Nope, that doesn't align with US interests at all.
Literally no one on lemmy has ever said China is above criticism. I dare you to find a single instance of that ever happening.