> The point here is that some PMs feel that if they're not demanding changes, they are not necessary / not doing their job / etc. If there's nothing wrong with the completed work, such a PM will demand unnecessary changes, in order to justify themselves.

Is that the point? Or is the point that some developers/designers don't like to get edited, so they tell themselves that their PM is pathological?

There's more than one valid perspective on things, and in my experience professional relationships work better when everyone realizes that.

edit: spelling