In the eyes of some front office executives and Marlins players, Tommy Hutton was too negative. While the Marlins did not give a reason for not renewing Hutton's contract, a source told Barry Jackson of The Miami Herald Hutton was dismissed because the team felt he was indeed notably critical.
According to a source in close contact with the Marlins, the team believed Hutton was too negative – a criticism that isn’t valid if examining his full body of work.
Hutton was critical when necessary and had a penchant for unleashing the occasional playful rant, but there’s a distinction between critical and excessively negative.