Earlier quoted context omitted.
Yeah real identity has been going on for a while and recently I had to submit my id number too but I don't think it affects most of the discussion on Zhihu as long as it's not too politically sensitive. It's an annoyance for many people in oversea though.
As I am not a Chinese speaker..do you confirm there is in the thread a comment that the maintainer is also Chinese ? I am concerned about possible pressure from Huawei and its "shareholders": https://www.bbc.com/news/business-53172057 to a Kernel maintainer. Looking at the heavy down votes my post got its not a concern here...
From the email it looks like he works/worked in SUSE.