I'm a little wary of believing this without confirmation. It certainly sounds like something an app from a big Chinese company might do, but the LLM writing style with em-dashes replaced by double hyphens looked like someone trying to hide that they use an LLM. And I noticed that the account for the Gist submission is only 3 hours old. And then looking here the account on HN is also only 3 hours old. Seems a little sketchy to me.

Totally, Chinese software would never do anything like that. Shocking news, I say, shocking!