There is a large amount of players who hijack the game
I don't get it, but there seems to be a sudden increase of players who adopt the playing style of "I am the game, the other 9 does not matter, if you cannot follow it your game is done. Enjoy the 4v5". I'm really tired of this since I am not allowed to play my own game and being reduced to be a slave for this player. I've even seen WHOLE TEAM quitting games recently when it went too far so all other 4 of us can leave this player alone.
There is an sudden alarming rate of players that make ranked games really trivial that allies will rather quit rather than playing with these people. I don't get why, but it seems its after the positional que incident.