I don't think it's intended to be criticism of China in particular. "Common thing happens in China, here are the details" is interesting news for some people.
For example, I was aware that Northeasterners are seen as a distinct group, but not in terms of external rejection, but rather internal cohesion, e.g. when one of my friends joked that hearing the Northeastern accent of his taxi driver made him feel almost at home.
I'm from the Northeast. Your initial assessment was the correct one. There is no external rejection of Northeasteners. Hearing others speak with a Northeastern accent is strangely reassuring though.
>"Common thing happens in China, here are the details" is interesting news for some people.
Except that's the issue, with articles like these the thing that's claimed to be happening are extreme cases but they make them out to be common. Because it's China nobody reading the Economist can smell the bullshit as they have no direct knowledge. I see it happen with Japan related news too.
For example, I was aware that Northeasterners are seen as a distinct group, but not in terms of external rejection, but rather internal cohesion, e.g. when one of my friends joked that hearing the Northeastern accent of his taxi driver made him feel almost at home.