You could reasonably argue that Overwatch has a toxicity problem. You could also reasonably argue that much of that toxicity has to do with the nature of the game itself and its prescribed meta – and how players not adhering to that meta makes other people angry. That said, Blizzard starting taking its first steps to combatting the game’s toxicity last year, with improved reporting tools. Now, they’re looking towards machine learning and AI to curb awful behaviour

Other than lag, disconnects and coming up against opponents who are just much better than you are, there are few things worse in multiplayer games than toxic and abusive players. It’s an issue that the industry has been trying to curb for forever – because a more inclusive, welcoming industry means more people playing games (and spending money on them).

Ubisoft has had it up to here with abusive and toxic behaviour on Rainbow Six Siege, and they're not going to take that behaviour somewhere, between the sacred silence and sleep.

"If you're a player who is punished for toxicity or intentional feeding or so on, you can't get loot," says League of Legends developer Riot Games.