1. I got the impression that there may be no long term safety net for the enduring impact of this. (Like PTSD support for policemen.) That's not good enough.
2. Reading this piece I don't imagine the system can actually "work" in any reasonable way. This job should be done by the individual user. In FB you can "block" other people. I imagine that would sort out much of this issue.
3. If FB and others are forced to police and censor like this maybe they should simply take themselves out of business lest they become inclined to exterminate our species for the actions of what, I hope, are a few.