That is an exaggeration.
The Chinese economy loses a large number of manual, factory jobs to automation each year. US factories are highly automated -- you're more likely to lose your job to a robot rather than a Chinaman
Secondly, the average life expectancy shows that the average life expectancy of the Chinese (overall) is 82.2 years and we have a life expectancy of 78.3 years --> so they live longer than us
Polluted rivers -- you are correct on that count
What is hurting us is the increased federal regulations, not just about environment, but about taxes, workers etc.
What is also hurting us is the taxation rule that a company gets double taxed on earnings abroad if it tries to bring that money back to the US. Net result -- companies prefer to keep that money abroad and so build and invest abroad more and more.
Finally -- the US has no poverty really -- compare the "poor" here with those in India or Bangladesh -- our "poor" have a large TV and a couple of cars and do not starve...-- thank GOD and America for that.
Given enough time the "Free Traitor" Captains of industry will fix that.