No single manger is ever perfect.
You look hard enough at Sparky, Tommy, Tony, Casey and all made brilliant moves, and bone head moves.
Yes, Buck make a colossal mistake, it happens. Over all, look at this body of work while at the helm, he had a darn good 5 year run.
I still had faith in him, until Peter came back in charge and ruined the team and made it unplayable.