> outrage amplification may be a side effect of optimising for engagement

I tend to agree, but I suspect that is the last thing the networks would be willing to change, as that is what keeps people there and gets advertising clicks.

If it were to reach the point of attracting regulation, what could be regulated? Maximum engagement by the networks, impose some sort of ration, or regulate the users and their twitterings?

So I could see it all too easily ending up solving the wrong problem in the wrong way.

Honestly off the top of my head, I don't know how I would approach this. Especially when some of the possible approaches would be a conflict of interest for the networks.