Every reorganization, every revamp, every change means that some people will not like it. And those that don't like it have two options: Grin and bear it, or hand in a resignation note.
Question for 100 points: Will good people, who are sought and have zero problem finding a new job, be in the first or in the latter group?
They'll be in both. And will your other group ("people who know that they have no chance of ever being hired again because they're lazy, dumb or both").