A sivir jungle can go 0/9/0 with electrocute and trype in all chat that and just literally make 4 other players MISERABLE, won't get punished.
But you say anything ANYTHING about their behavior, about how they are playing, about literally anything, boom chat restricted, or suspended or penalized in some way. It's actual horse shit that the priority is, "dont hurt the persons feelings when they are just inting your game! :)" Like fuck that. You call someone dumb and you get punished, you go 0/20 with tear in all 6 slots and you get a free grace of "tHeY wErE hAvInG a bAd gAmE"