The most toxic game community. I've expalined this before, the masses don't understand still.
So why is the game so toxic? Across he board with sample size of millions of players, you have to conclude its rooted in human nature.
Its not complicated--people feel anger or sadness when things are beyond their control. So much of the game is not in a players control. This is always going to produced emotions. And some people aren't good at controlling their emotions, and some choose not to. These are personality issues, and if you think that bans are going to correct behavoior rooted in their years of experiences that developed them into the kind of person they are now, you have no grasp of human nature, how complex people are, or really, reality in general.
Riot created a game, that at its core, will bring out the worst in people due to the nature of the game. That is, individual rank and status based largely on a lot that is out of the player's control. And this isn't some small thing. A good player who wins some and losses some, could get unlucky with teammates a few matches in a row and cause him to play bad being frustrate for run out of patience, and lose more after that.
Riot doesn't really care about fixing the issue. If they did, they would come down hard on people who purposely troll and instigate to try to get a reaction out of people. And they would do something that would lessen the blow of a loss so that players feel less bad when losing due to circumstances out of their control.
You aren't going to change human nature and you certainly won't correct with bans or chat restrictions. The idea that you think you can impart a real change in a person by such means is beyond laughable
