I hosted some online game server once and toxic isn't how I'd describe the issue. The people were all nice and gentle, except this one guy, after I banned him for targeted suicide encouragement, he spent months harassing everyone who ever joined the server until I shut it down. Thankfully we didn't know each other's identities.
There was a small game I play, one guy posted a picture of a plane ticket to the developer's country saying "I will come to your house with a gun. This is an actionable death threat". Nothing came of it, banned for one season.