Been saying this for two years. Everyone in discord and the Fanboys all scream that you're dumb to think Deadlock would fail because of MM. And it will if they do not do anything to fix it and deal with smurfs and cheaters.
They could at the very least explain how MM works, ranks work, team comp works, and the rest of the stuff involved. Maybe, the burning question and most important - why haven't they done anything to try to fix it. Is the goal to still collect data to build a better MM for launch? They can fix nothing, but just actually explain it to the players and save a bunch of grief.