You do realize that Chinese is not even an ethnicity right? I mean, you have Kazakhs, Uighurs, Tibetans, Mongolians, Koreans and even some Russians who all are born in China and have Chinese citizenship.
Saying "the Chinese think blah" is the same as saying "the Americans think blah". So stop with the racist crap.
If he said "the Han do no care about pollution or the environment" then fine, you'd have a great point.