If you have enough time to flame you probably deserve any punishments you may get

I am a jungle main and when I am fully concentrating I have very little time to even pay attention to the chat because I am constantly watching the map and expending my brain power to track the enemy jungler. Often I wouldn't even realise someone is flaming me at all even though he was non-stop accusing me of not ganking the entire game until much later.

When I play my off-roles (top/sp) i also have to invest a lot of energy in watching the river when I am not trading so that the enemy jungler doesnt kill me or my adc. There is really not much time to type at all (unless I am respawning) if I am putting in an average amount of effort to enjoy myself.

Simply put I feel if you are really playing league to enjoy league and better your game instead of blaming others, it is unlikely that you will be punished due to toxicity. If you are constantly getting into trouble, you might actually enjoy flaming people more than playing league and may have to consult a psychiatrist.

tl;dr If you are playing league to honestly enjoy playing and not blaming you are not likely to get into arguments that will lead to behaviour related punishments.

P.S. I also noticed through browsing these forums that most of the people begging to be unbanned are absolutely unrepentent and probably deserve to be repeatedly punished.