What bugs me the most are the ones that cycle through a list of LLM user agents.. What are you actually? You can't be Baidu and Bing at the same time.
I think many don't see the point of robots.txt as it will just be ignored by most bots anyway, so instead concentrate on more complicated measures.
The whole point is that if you can prove a company is doing this kind of shit, they should be on the hook for it. Of course, I'm not expecting any company in China to actually pay the fines, but this opens up some options such as seizing foreign assets.