I was also somewhat emotional, after all, relations between China and the EU are more hostile than before, and that naturally affects how people view each other. As for Naomi Wu, she was never that popular in China to begin with—after all, ordinary people don’t really know much about things like open-source licenses. As for her disappearance, well, she disappeared, and not many people really care. Other comments have already pointed out that she was involved in many issues, including violations related to open-source, and possibly some interactions with Linux; it’s hard for me to sort out exactly why she was “banned” on the Chinese internet. Her videos are still there; I don’t know if she still updates them, but indeed, no one really talks about her anymore.
Personally, I don’t quite agree with this kind of action, unless there’s a clear law that she violated. But China isn’t very transparent about such matters, so sometimes what the government does is right, sometimes it isn’t. Each case needs to be studied specifically. However, this lack of transparency is indeed a weakness.