Its hilariously pathetic that redditors call the matchmaking "bad" when it is in fact rigged. Its like their own version of cope, and they cant come to terms with the fact the game tries to consistently meddle with your matches on a day to day basis.
Its very common for to me to get into teams that get absolutely blown out as my first matches of the day, sometimes and more commonly this season I've rolled peak bronze players more than I ever have in any other season, and these guys aren't playing a hidden MMR level to me, they're legit new if not; not even supposed to be in this lobby.