Leagues matchmaking system puts together a game that tries to balance three things: Fair matches - Each team is roughly the same skill. Position preference - You get to play a position you want to play.
Is there still MMR in League?
As we know, in League of Legends, the MMR system is fully hidden, and there is no reliable way to accurately calculate your MMR rating. Knowing your MMR is crucial to understanding how fast you can climb to the highest tiers of competitive play.
Is League a toxic game?
The toxicity prevalent in the Leagues community will be a constant battle for Riot because that player base will never go away. Theres no feasible way to stop them from playing and potentially ruining the game for others, and thats okay. Toxicity is a part of League, but that doesnt mean it has to be a part of you.