Good analogy.

The solution, however, isn't prohibition or age restrictions; it's either regulating the algorithms or holding these companies responsible for the adverse outcomes their platforms contribute to. Safe harbor laws made sense when tech wasn't filtering/promoting content, now that they are influencing the material we see, these laws must no longer apply.

This may mean adopting a modern equivalent to libel laws. Something akin to: if an algorithm pushes false information, the company behind the algorithm can be sued for harm. Disallow terms of service that force arbitration or cap liability limits.

That makes me wonder, if only teenagers could vote would they ban adults from social media?

They'll vote eventually, and preferably won't be damaged in irreparable ways by then

I just can't get behind any of it, sorry. The puritanical moralizing feels so good until you cause a revolution or the species goes extinct.

Handwaving “public health” doesn’t make it so.