Riot's banning system

Hey Vsauce, Michael here.So i have a friend that got banned for saying lux g@y skin in our blind pick game and he got banned for that, at the same time bunch of just toxic players and afkers get away with that for no reasson. As most of u guys know when u report a player the report goes to the Riot bot made for finding key words in reported players games(most common words banned for:kys (riot take this really seriously) and any kind of racial slur), and 50% of the times those players get away with it. Even worse than that is if u report a player for afk, i know sometimes u disconnect bcs of internet or power blackout but when a person flame before they leave its almost certain that they left on purpose and, due to that, needs to be banned or suspended. So yea that's all i have to say.