To be fair, my father in law who is Chinese and had to exile himself during the cultural revolution would pretty much say the same thing about the Cultural Revolution. Educated people in China who lived through it will certainly criticise the Cultural Revolution (or The Great Leap Forward for that matter) if they are in a situation when they can be honest about it.

So I'm not sure that specific comment would be considered to be a "dominant western narrative" unless you're going to tell me that older (and so who have lived through it) educated people in China who don't speak a word of English have a western mindset because they're educated.