Did you watch the video, or just the headline? The argument is that China is doing more than other countries when it comes to renewables. And their pollution is much better when looking at per capita numbers.
I think the per capita measurement of pollution for China is not really an apples to apples comparison to other first world nations as so much of their population lives in poverty.
I didn't feel like the video was being entirely honest, but the comment I replied to just ignored the entire contents of the video, which is why I commented.
China's per capita CO2 output is pretty much on par with the EU's now. Better than America, Canada, Australia, Russia, and others, but it's no longer actually that low