Have you ever played pvp games where you legitimately thought you were in a bots game?
Some of the games I play people's macro are so bad that I thought i accidentally queued for a bots game.
I think that riot actually puts bots in the ranked system to fill up their dead game in ranked queues, which is why ranks are not a bell curve. I talked with some friends and they also agree, people in gold or lower must be bots. To farther confirm this we played against some intermediate bots and then smurfed some games and the conclusion is that people in that elo literally play like bots.