This incident is a perfect example showing why embracing China and hoping they would be more open to modern values like freedom of speech, democracy, etc., is a total illusion.
Too many Chinese people are brainwashed to the core that even if the great firewall is switched off today, nothing will change. The currently brainwashed people simply despise anything against Chinese official rhetoric; they don't put any thoughts to follow other people's reasons. And this brainwashing will pass on from one generation to the next.
I've met too many mainland Chinese use only Baidu to search, use only WeChat to do messaging, read only Weibo and watch only CCTV to update themselves on current affairs, even when they are physically outside of China. Sure there are still some reasonable Chinese, but 9.9 times out of 10 they are very reluctant to speak up, since they still have some stakes in China. If they do speak up, their family back in China will get locked up, harrased, wealth get taken, you name it. It happens all the time.
That's why powerful external force is necessary for China to change. And if we don't force China to change, China will erode the rest of the world's modern values, which is the foundation of our civilization. China's export of oppression, like recent news about NBA and Apple, has been actually on-going for a very long time. In Hong Kong here, we see it all the time all around us.