My only real horror story is of my own main group and all of us being awful, in that, during the pandemic, we first tried using Discord as our way of communicating to play D&D online, and oh my god, it was far, far too easy to post memes in Discord (it practically demands that you do!), and we just all kept doing it and then saying we'd stop and then five minutes later someone would find a super-apposite one for what was happening in the game and post it and we'd all crack up and the game's atmosphere would be vapourized, and this just kept happening despite us all swearing we'd stop.
I partially blame pandemic madness but when we switched to using Google chat thing for sound/video and Roll20 for rolling/rules it deleted the problem so I guess sometimes technology can solve people being awful idiots. Even if I am those people.