Just got matched with a Placements

Just got out of a match where our Top went Lucian and fed the enemy Darius. He did odd things all game where he would walk towards enemies we had sight on 2 seconds ago. He would rush in headfirst into teamfights when he was 1/5. So after game I look to go see if he was one of those guys who did REALLY well 2 games ago and has done nothing but feed. Turns out (well yes he kinda did 14/11), but that IT WAS ALSO HIS 4th game on his match history. HE ONLY HAD 4 GAMES on that history. I have 287 games played on my ranked this season. Only bronze should be able to que with Placements. How was this fair to get a guy with only 4 games on his match history in general. There was no way he wasn't going to feed unless we happened to have some LoL prodigy. This isn't even DQ bullshit, this is advanced bullshit.