If they knew that he was a terrible 2b from day one, they would have just shipped him off to the OF and wouldn't have shuffled him around the way they have. I guess I really needed to spell it out for you.
They were shuffling him around from day one! LF, RF, CF, 2B, SS. They needed to find one position for KC. He's not a good defender and wasn't really succeeding anywhere. He's passable in the OF and probably just needed to be sent there OR needed a fulltime spot at 2B if they really thought he'd eventually figure it out.