I'm not sure what you mean by "moralizations," because all the focus on individual behavior is much more typical of liberal environmentalism than it is of degrowth. I think you are right that we will need some top-down goal-setting and expert advice, but nearly all the actual progams of degrowth, like getting people to grow food, love and respect the land, water and living things, are spiritual as much as political. The political system in a truly sustainable system probably will look more like socialism than like whatever it is we have now. Wealth accumulation as a personal or social goal is not a basis for a healthy or happy world.