Earlier quoted context omitted.
> Personally I think "harmful content" concept is extremely dangerous when applied to social networks. It's a kludge. The real problem is broadcast technology becoming too easy to access (in the form of social media). It's reduced transmission friction too much, which has seriously undermined the ability of the "marketplace of ideas" to filter the good from the bad. There's a sweet spot between monopolization and tot…
This is actually a really insightful way to look at it. I gather you are saying Facebook should not be the one to do the "filtering," but also that it's not ideal for each individual to have to do it themselves. What's the solution?
The easiest and least problematic is to add friction, which in my fantasies would be to ban sites like Facebook and Twitter outright that provide too-easy access to ready-made audiences of millions. They're basically like handing out loaded guns to a class of first graders playing on a playground. Guns are fine and shouldn't be monopolized by one group or another, but they should also not be in the hands of untrained first graders on playgrounds.
A somewhat less radical form would be to kneecap the ability to share widely on social media sites: no public posts, sharing limited to direct connections (and a cap the number of those to 1000 or something), no features to easily re-share a post outside of its initial audience, get rid of groups, kick out organizations, etc. Bring back classic web forums for communities, and push people who want to build an audience back to blogs and personal websites.