Spend 10 mins on tribunal and you realize most of the ppl do deserve to be there. They are going 1/10/0 and typing 5x more than any other player. Regardless of the insults they are typing, if they are typing that much, they are not paying attention to the map, to cs, to teamfights, or they are just dead all the time so spend their time insulting ppl.
Yes some of the ppl on tribunal aren't super bad, that is why pardon exists. But they got there for a reason. I hvn't seen anybody on there reported who did nothing wrong. I hvn't seen ppl reported for feeding with a 14/2/10 score, or ppl reported for bad language, who didn't type anything. It is a matter of how detrimental to their team they were.