This is where I think we may have to disagree. I cannot follow the logic of players [winning or losing the same number of games as me] as a key indicator or measurement of co-players’ skill.
This is why the group mechanism completely breaks the reasoning behind having a matchmaker in the first place. If your group is solid, and let’s say you spend a week or so climbing the ladder with this group. Regardless if your skill is adequate for the new skill tier you’ve risen to, the fact that you have “won” as many games as others around you at this new skill tier says nothing to your actual skill. It also shows that, for one reason or another, you did not belong at your previous skill tier because you were able to climb.
You could counter-argue that solo-queuing would fix that, but for a player with a dedicated group/team who never solo-queues for comp immediately invalidates any theories put forth in favor of the matchmaker.
In essence, the player has “matched” themselves with humans they choose to play alongside, and against others the matchmaker thinks can beat them. If such a team proves themselves more effective as a unit at winning games and climbing the ladder than “matchmade” players, then it lends credence to other players who feel trapped by the matchmaker itself.
Not that I would disagree with this either, but if we want to discuss quality, then you have to address the disparity that sometimes arises whenever teams of sufficient skill manage to severely outplay teams of insufficient skill. This is made evident by six-stack teams of similarly skilled players (within close SR proximity) which manage to outplay or win the majority of games at their skill level.
This ties in to how well you’re actually doing as well as being a good team player, and playing with teammates who are able to also do well because of your performance. This is why LFG and creating your own personalized teams is a great workaround. If you are doing something wrong, and your team is capable of letting you know where you misstepped, the quality of their advice is invaluable – as opposed to being flamed or harassed by randoms in solo-queue.
So, no. I don’t think the matchmaker in and of itself is without fault. And while I understand that you’re arguing in the affirmative for player self-reflection and self-improvement, I don’t think absolving the system of its faults is entirely correct either. Which is easily demonstrated by a multi-stack of players winning more games than they lose.
If you remove the matchmaker’s ability to matchmake, it cannot create performant teams consistently. Which is what I believe many people are trying to argue here in good faith.
Not that I prefer one camp or the other. Just pointing out my observations.