Skimmed this article, don’t recall where it was linked from – Jaymo, maybe? – and came across this:
Muted a whole bunch of political / upsetting terms. Unfollowed people posting non-stop dread bait. This was crucial to regaining an even keel.
Dread bait! Isn’t that a perfect descriptor for a certain kind of posting? Maybe dreadbait, as one word, to sit next to doomscrolling? Dreadbait for the doomscroll. Everybody knows someone who scatters dreadbait.