memes

That's a revisionist view of China's labour history. There have been many examples where the glorious leadership did NOT find meaningful employment for its workers.
The Chinese government sees their citizens as a means, not an end. If it works out better to let people starve homeless, people will shiver in the rain. If it's cheaper to use slaves, they will use slaves. If it's cheaper to let people die, people will die. If they don't anticipate the need for human labour in the future and there are a billion extra mouths to feed, a billion people will die.

China has some of the worst domestic environmental damage in the world. To their credit, they also have some of the best environmental remediation, but it's still selling out the future of everyone on the planet.

I'm not the one holding out exploitation as prosperity, so I do not have to defend the actions of other exploitative environments. By your own logic, they should be viewed strictly in terms of their prosperity, so obviously you think things in Germany and the USA are just peachy.
But I would note that in Germany and the USA, corporations are independent of the state and the state is not directly benefiting from that exploitation to the same degree -- merely enabling it through legislative capture. But that is not a thing in China because the Chinese government is effectively entirely captured, being effectively the same entity as all the major Chinese corporations.