Riot should take different measurements regarding players punishments.
Out of 100 people getting banned, only 1 or 2 of them get banned for actually cheating/trolling/feeding, the rest of them get a permaban for cussing. Why doesn't Riot remove the right to use the chat instead of suspending someone's account for his/her behaviour. And if that person starts missbehaving by feeding/trolling/etc then sure, permaban him. But not like this.