Toxic players getting away with it.

So today i played a game as i became a little salty, i said that zed was an easy champion to tower dive with due to his shadows, the entire other team began to flame me. 50 min later the game was over and my team had lost. at the review screen where you can honor or report players the other teams ADC proceeded to say this to me." Ahri can you learn to shut the fck up once in your worthless life. You compulsivley whine every time you die you complete nuicance. I swear to god im going to rip out your throat to shut you the fk up." I don't understand how this is acceptable