The blame game
100 percent of the time, if you are doing very well in a game and start criticizing the other players, they will 100 percent of the time turn around and say things like "kda doesn't matter" "you are toxic" "
Despite the fact that you have a Jungler on your team with 23 deaths, and a Shaco for support with 17 deaths....somehow YOU are the problem and the one who cost them the match...ya know, for daring to suggest that the ADC needs to stop wandering around alone, or that they need to stop focusing the tanky bait every team fight.
In my entire life, I have never come across a group of more unreasonable people then when playing this game. Nothing even compares to to the level of stupidity and ignorance that league players display to me on a daily basis.