Parcells always quits on his teams. Maybe that explains the dislike. I guarantee he will not complete his contract with the Miami Dolphins. Within a year or two, he'll be scowling again and making snide comments about the ownership and he'll find some way to sneak out on the team in the middle of the night. That's the Parcells way.
Without Bill Belichick, Parcells has been an utter failure wherever he goes.