Brace yourself: it is about to get worse. r/RedditAlternatives has some interesting posts saying how Reddit is about to ditch their modmail in exchange for their “chat” function (that has never worked correctly… ever).
*rolls eyes* "Great".
I might be wrong, but I think this whole issue boils down to four vices brought from Reddit: assumptions, decontextualisation, genetic fallacy, oversimplification. Those four on their own already make social media hostile, but if you couple them with political engagement (otherwise a great thing), you'll get people who genuinely see no difference between "they euthanised a 11yo dog with cancer" and "they kill puppies".
Or between "free Luigi" and "$CEO_name
needs a Luigi in their life". Both show support to the same cause, but only the later can be reasonably understood as a call to violence (to the point it'd bring the admin troubles.)
Ategon showed interest in the chat on making the notification chime configurable. So you could for example have it chiming when it's full, or for any number of pixels.