As already stated, He's not the worst, but game three definitely earned him his punishment from the voters. He called someone else retarded, that may be acceptable to you but to the community. Not so much.
There is also a lot of sentiment within this thread that proves you have almost no idea how the tribunal works. First of all, there is no more IP. So, no, your theory about there being a lot of people spamming punish for IP is out. Given that there was around a 50% pardon rate also negates that theory.
Secondly, as stated before in this thread which you ignored. Permabans are reviewed by Riot. They were not permabanned for JUST these games. In any regard. It takes more games to get to the tribunal, we don't see those cases. The people who judged his case at Riot have access to a lot more information in the tribunal. They were permabanned because they are jerks who made it clear they are not going to correct their behavior.
And on another note if You are gonna get mad over someone using strong language then why do you not turn mature language filter on? I mean if no one uses it then why is it there. And you can just mute them if they are annoying.
Is also silly. Because the only bans that occur for "strong language" are usually racial, or homophobic slurs. Or calling people something like *******. Simple cursing does not get you banned in most cases. There is a time and a place for everything. And the mute button only stops them from making the problem worse, it doesn't fix the problem and hurts the team overall.
Let me make an analogy. You have a child, this child writes on the walls with crayons. You take them away and tell him that he needs to stop doing that. Give the crayons back. He does it again, you take the crayons away, tell him again, and don't give them back for a while longer. This repeats until you decide that the child is absolutely not going to learn so you just never give the crayons back. In this case, the child would be your friends. The crayons would be the game. And them writing on the wall would be them being jerks to other players.
The tribunal isn't a true representation of the League population. Only the white knights do tribunal. The type of person who ends up on the Tribunal isn't really the person who participates in judging. Ergo the Tribunal's judgement is going to be overly swayed towards the hyper-sensitive.
If you really disagree with how the Tribunal is run, go in and vote yourself. Be the change you want to see.
This argument is also silly because the problem was before that the tribunal was too sensitive. Towards the players being judged. People would get away with all sorts of things. So, this argument is also silly and offensive. But the final sentence is at least true.