Workers in Detroit might get paid union wages, but many auto factories have relocated to the South where they can underpay and abuse workers much more easily. I just did some quick googling and it seems like being a factory worker in China isn't bad compared to in the US. They work in highly automated, clean, air-conditioned spaces like would be found here. Dirty conditions and manual labor are no longer compatible with today's automotive quality requirements. Low level workers make modest wages, but they employ a bunch of engineers and technicians just like here in the US, and they have subsidized cafeterias and some provide housing or stipends for housing. You might criticize the expectation of working significant overtime, but I've worked in factories which had mandatory overtime in the US, so that sort of structural coercion isn't unique to China. Compared to a "right to work" state, Chinese workers have stronger protections from being laid off or fired. The main downside seems to be lax enforcement of safety standards. If the government doesn't notice something unsafe on its own, there isn't a Chinese version of dropping a hint to OSHA.

Now further upstream in the supply chain? No thanks. That's where you'll find abysmal working conditions. Just remember there are good reasons our government wants us to believe everything sucks for workers in China.