Tbh toxicity is a problem but only to an extent. If you notice the really popular league videos are the ones where the gameplay is almost unrelated and it's just you and a bunch of friends in a call talking shit. Protato monster top 5 plays of the week is not even fun to watch anymore, it's straight up boring. Why? There is no added element to it than oh yea look at wat this guy did. Honestly toxicity is not a problem in this game.
Honestly at most the punishment for being toxic should be chat restrictions. Why, caz there is a mute button that can stop unwanted comments if you prefer. There is no button to stop anyone from scripting, trolling, feeding, or going afk. There is no button to stop that. There is a button to stop "toxic" behavior.
Sometimes I feel like im playing club penguin because of how riot likes to baby us. If riot looks at their age groups that play this game. Im pretty sure more than 80 percent are going to be 13 and up. At that age, im pretty sure we all know and use "toxic" words. People literall use the report for "verbal abuse" button so they feel they are getting back at the "toxic" person.