I got perma-banned for my second offence

I feel like the fact that todays league community is so fragile that i cant make an aggressive comment towards an ally or enemy player is ridiculous. If someone actually takes my comments seriously and think because i said "kys" they should actually do it then they need mental help, also what is the point of having a language filter and a mute button if no one uses it. Trash talk is apart of the gaming culture i feel and is apart of most games if not all. I feel perma banning me on my second offence is a little rash and quick to pull the trigger, i understand they gave me a warning with my first offence but if they gave me something like a perma chat ban or a month ban it would give me the break i obviously need from this game. i have put 8 years into this game along with a lot of time and money, its sad to see that after my second offence ever i get perma banned.

Chat log: https://docs.google.com/document/d/1LX1EB6M033cr3R0_I-uYbx5BYWGjnaBJt4W6vkzGg9s/edit?usp=sharing