So, Let Me Get This Right
Let's say a toxic player gets banned for two weeks. It's deserved because some of the shit he said was pretty bad. Five months later, after not getting validly reported, and attempting to reform, said player is permabanned because of a relapse.
According to Riot's team, this is okay.
This is like, "Yeah, you were caught with heroin, so we're taking you to prison for 2-4 years."
Said heroin addict attends rehabilitation programs, and serves their time.
Six years later, said addict is caught with heroin and sentenced to either life in prison without parole, or the death penalty.
This is not okay.