Honestly, a lot of players definitely do try to fix their behavior...
I've played ~400 games chat restricted with a great attitude.
But after you get through your restrictions and you get another 400... after just playing through 250 restricted...
It's hard not to be toxic.
When you get a duo queue in your group that decides to just report you, and then you're restricted from ranked play... because they were trolls...
It's hard not to be toxic.
When you decide you want to test a build, and you happen to lose a normal game and everyone wants to report you for not following their skewed idea of what the LoL meta is....
It's hard not to be toxic.
When someone is being toxic to you, and everyone else in the game takes their side because you don't have any chats to respond...
It's hard not to be toxic.
DONT GET ME WRONG, I'm not a toxic player. At least not anymore. If anything, I'm one of the biggest bundles of joy to have on your team. I'm just saying I've been harshly reprimanded for many unreasonable reasons, and so have many other players. Riot should make some effort to fix their player judgement system or else Salty-Players-Turned-Good will once again become salty :P