I agree with this. Incidentally, some of my most productive periods were when the team was given a real deadline. Often times either the deadline is made up entirely or there’s a generally understood sense that it can easily be pushed back. I find that if I can trust that the constraint is a real one it really helps us to scope things out of necessity. My theory is a lot of the never ending development cycles is because engineers don’t actually believe the constraints are hard, which leads to scope creep or at least the development getting stretched out.