Putting aside the fact that the OP is really low effort, it seems as though there are two things we need to unpack from your expansions, below. You seem to be saying:
I WISH THE NA LEAGUE CULTURE WAS MORE REFLECTIVE OF WHAT I CONSIDER TO BE PLAYFUL BANTER.
That's like, your opinion, man. The average player seems to be pretty consistent in what they consider inappropriate for League. I'm sorry that you can't get what you want, but it's not really fair to expect the community to conform to you.
I WISH GAMEPLAY WAS TAKEN INTO MORE CONSIDERATION THAN LANGUAGE BECAUSE MUTE BUTTON
Riot can do both. The community expects them to do both. Oh, and the mute button doesn't excuse behavior. It may limit the amount of damage someone can do, but that doesn't mean there hasn't been damage.