Some here will say they knew BJ would be terrible, but they're lying. It was not a terrible move, at the time.
The move that at the time was the worst decision was signing CJ to the extension. It wasn't a terrible risk, because he came off a good season. But at the same time, his walk numbers are always terrible, especially compared to his Ks. Poor defense. He's a nothing player if he isn't getting very lucky. And he's been beyond terrible this year and a true lineup killer.