I wld like to point out how Forced 50% winrate is very relevant to this topic.
First of all, the goal of the matchmaker is to make “Fun” matches not fair matches. You end up with a variety of hard, easy and even matches., so not every game is 50% chance of winning. This is why we have lopsided stomps and repeat back and forth losing streaks and winning streaks.
Now these Intentional hard and easy matches definitely contributed to the tensions and toxicity among players. And if you think about it, banning or perma banning players for toxicity are not so warranted after all when it’s the matchmakers that encourage tensions in the first place.