Trash talking in League

Talking trash is part of any competitive sport. Getting into the enemy's head or even telling your own teammates to stop playing like shit when they are screwing up. I understand that the current generation gets offended by things that make the older generations just shrug their shoulders but I'm starting to think that "toxic" doesn't mean what people think it means.

I'm further confused by riots stance on this given the tools they give the player base to trash talk players.

You can't tell a player they suck but you can...

Laugh repeatedly at them Taunt them Spam your champion emote

Why are these things even in the game if not to trash talk the other players. It seems that as long as you use these to do your trash talking it's acceptable but isn't that like calling someone the N word. No not calling somebody %%%%%% but actually call them an "N word". I mean you didn't call them a %%%%%%.....but everyone knows what you mean.

So if everyone knows that when you are spamming your champ master, laughing repeatedly or taunting repeatedly that you are really talking trash.

And since talking trash is considered "toxic" to our "everyone gets a trophy" and "we don't keep score so they don't get their feelings hurt for losing" generation,

Why then does riot give the players the tools to do the things they don't want us doing?