I think calling it a "teen mental health crisis" is giving teenagers too little credit and adults too much. Many of the same features that addict and abuse teenagers do the same to adults. I don't think we should view this through a lens of "child safety" (with all the political connotations that has), when it affects everyone. I think we're currently in the period much like the pre-"cigarettes are known to be addictive" one. *Post* "there's a warning on every pack", it's reasonable for people to take responsibility for their own usage (as long as it isn't around others). *Pre* "there's a warning on every pack", it can't be written off as "personal responsibility".

@josh @Casey section 230 states that platforms are not responsible for user-generated content since they do not perform an editorial role. But clearly the For You feed algorithm seems editorial. I propose a new rule:
Platforms are not responsible for user-generated speech. But platforms are responsible for what speech they show you via their algorithms. Reverse chronological feed of people you follow is exempt, as is search results.