@r1ggedgame
It has to do with:
a) the normal/bell player skill distribution
b) the mean/average of this distribution, which most likely is surprisingly low. I wouldn't be surprised at all if the average player is a <1 Kills/matches played player... Perhaps even closer to 0.5 than 1.
c) An unrealistic view how well you should perform in an average match if you are average skilled or perhaps even worse. What I mean is that if we hypothetically could create an infinitely strict SBMM, i.e a lobby with 59 clones of yourself, and let you play a million matches, then everyones KD and winrate would be 1 and 5% respectively. This is what a infinitely "fair" matchmaking would feel like.
Bottom line is that if you truly are way above the average in skill, you wont be bothered that much by your useless teammates, because as long as you mind your own business and focus on your own game play (which is exaclty what high elo streamers like Aceu and Ittztimmy do), then you will win much more than you will lose since the average enemy teammate is as bad as your average teammate. But if you find yourself always getting "bad teammates" and you cant handle that, then you probably are pretty close to average skilled as well but you wont admit that and start to blame on rigged matches. Because thats the point here; a squad of 3 average skilled player wont have a banger of a game that often, simply because THEY ARE AVERAGE in the matchmaking =) Hypothetcally, they should consider a 3 kills (1 K/D each) match an OK outcome. But it seems like every single hardstuck Plat4 player here think that the matchmaking is rigged because they cant get 10 kills games that often.