I recall some shit in Overwatch or League of Legends a few years ago about people being reported for saying "gg" ironically or spitefully, something like that. Probably too ridiculous to take seriously since that doesn't happen anymore, but it's still fucked.
I absolutely loved the freedom on early Xbox Live to say whatever you wanted to your teammates in game and to your opponents in lobbies, like on Call of Duty 4 and Modern Warfare 2. Recently I looked at the new Modern Warfare 3 remake, or whatever the fuck, on steam. It had a news announcement that they would be using a machine learning algorithm to detect players saying naughty no no words and banning them for it. More than the fact that they'll ban you, I cannot stand that they so brazenly admit to collecting all your voice chat logs and just doing whatever the fuck they want with them. I'm not going to allow that. Never hit "ignore" so fast on a game before.