Interesting, I got too focused on that point. I think you're absolutely right, or at least have the potential to be; I have certainly known people in my life who have had
deeply problematic relationships with social media, to the point where professional help was either used or (IMO) would have been a good idea. I mean, I've personally had days where I wished that someone would just yell "get off fucking reddit!" at me.
I don't think it's "all users," and even for lots of users who are harmed, it's not necessarily "all the time." But it's definitely something that could be helped by a professional.
I guess the alternative is regulation of some kind: we recognize that these sites have the potential for meaningful harm to a large number of people, and someone (the government?) steps in to do something about it.