At one point in time, Riot did a level 20 challenge. They took players who were banned for being toxic and if they could get a new account to level 20 without getting punished by the Tribunal (it was still active then) they would get their accounts back. Every last one of them failed. This does not give me much hope for the permabanned.
Now I, in all sincerity wish you luck after you get off your 2 week suspension. While I see where you are coming from, I just don't agree with your stance on the punishment system. Back in the days of the Tribunal, people would get multiple chat restrictions and honestly, it didn't really work well. There were constantly players who would get a chat restriction, get that lifted, and then within 3 or so games, get another chat restriction. The problem with the old system is that it was not harsh enough. In all honesty, I've seen the toxicity in league go down tremendously over the past 4 years. The reason why League got the reputation for being so toxic is because of the old system, it has gotten a lot better.
So is the new system harsh? Absolutely, but that's the point of the system in the first place. Without the idea of a permaban for what you say in League, I honestly feel that League will be just as toxic as it was in Season 2-3 and that was just an awful time to play. Does it have flaws? sure it does, but no system is going to be perfect. But this one is pretty darn close.