I hate to break it to you but median disposable income is still significantly higher in the US, even after accounting for PPP. Unfortunately, as long as the USD holds reserve status and is propped up by fiat, their export of currency will likely keep their economy in the black for decades to come. Demand for worthless pieces of paper is still quite resilient. As for safety and satisfaction, that only matters if Americans can emigrate, something that the government is cracking down hard on.
I agree that China does not need to match US income on a per capita basis. However, take a look at this:
View attachment 121200
From Table 1, we can see that the top 16.3% (only 228 million people at most) of Chinese families earn more than USD $4800/yr. Meanwhile for Americans, the median family income was USD $68,000/year. The difference is greater than an order of magnitude. CNY PPP multiplier is 4.208 btw.
Largely irrelevant. EV sales only accounted for 6% of new car sales in 2022. The market share is growing but ultimately miniscule as of current figures. Unless you can prove that China's PPP multiplier is >15, the fact on the ground is that middle class Americans are wealthier than upper class Chinese.