Inasmuch as a "social network" is just people signing up to talk about certain topics and that's it, I don't have a problem with it. Internet forums of the 2000s weren't a problem necessarily. And while HN does have some "virality" mechanisms built in due to upvoting and while it is sometimes a "problem" on very divisive topics, it's not nearly on the scale of Facebook, Twitter and Co.
So if it were up to me, Twitter, Facebook, Tiktok etc. should either disappear or they should at least have to revise their algorithms and open them up to public scrutiny. Or, you know, if they went back to their original purpose of just being about connecting with friends and family. But I guess you can't make money out of that.
But we can at least try to get rid of the things that make the problem worse.
Moreover, minimising hyper-addictive patterns on such platforms would have a host of other benefits too.