It's a good example. Sometimes bosses will go even further than that and suggest changes that the employee feels are wrong. Then they argue about it. Then the b

It's a good example. Sometimes bosses will go even further than that and suggest changes that the employee feels are wrong. Then they argue about it. Then the boss says "I feel I'm right, and I hope I can convince you that this is the right decision, but you need to make the change now". That's the point where the employee feels like his input is worth nothing because he can't do anything against the boss's opinion and arguing was useless. This is why a trivial example like this crystallizes the exact point: it's not worth micromanaging employees over some changes that are not that important.