alt Hacker News"you don't even need to try to look at any correlation or causation to arrive at this"
You actually very much do. If there is no causation, then it is not "their impact". Otherwise, you're just advocating for rope-makers to be punished for wrong-use of their product. Which is, of course, foolish.
Ok, put another way, do you think we clearly know exactly the pros and cons for individuals to use AI chatbots for mental health treatment?
If you don't clearly know exactly those things, wanting anything else than "AI companies to be held responsible for the impact of their chatbots" as a first step would be utterly foolish and de-humanizing.