Playing the devil's advocate for your manager: maybe your particular group didn't have morale problems, but others did. If management wants to raise the averag

Playing the devil's advocate for your manager: maybe your particular group didn't have morale problems, but others did. If management wants to raise the average morale, they need everyone to do morale-raising efforts, even managers who don't think their particular groups needs it. Hence why your team got the changes even though it was previously fine.