I'm sorry this is simply not true and I'd argue this well meaning anti-racist-to-the-point-of-delusion attitude that has been drilled into the heads of Westerners is part of the problem of why China as a nation hasn't made more serious efforts to teach its citizenry the very basics of common courtesy.
I've been in airport immigration queues and watched numerous different Chinese people blatantly (there isn't a strong enough word to fully describe the magnitude) cut into every single line they could....if there was the slightest of gaps, a Chinese person would be jumping into it, completely oblivious (or not, I'm suspicious) to the rude stares of others who are politely queuing. And I won't even get into volume of speaking, driving habits, adherence to laws related to fraud, etc.
One would think their fellow countrymen who know better would say something (if I saw a Canadian pulling this stunt he'd get a severe public shaming from me), but once again most Westerners would probably disagree with this, as the very notion of groups having a social responsibility for "policing themselves" is also considered "racist", as is even noticing blatantly obvious patterns in objective reality.
EDIT: Reminded me of this video:
Why BUY books in CHINA when you can read them for FREE!
https://www.youtube.com/watch?v=950PYt9d1Po
I think this goes a long ways to explaining why they are the way they are, types of behavior that would be unthinkable anywhere else is absolutely normal in China.