I feel like several of the other books make it quite clear that invincible, well-meaning good guys can cause a lot of pain. Sometimes it works, sometimes they convince themselves that it was worth it, because clearly their ideology is the better one, sometimes they are terribly sorry for what they did. In any case it will hurt if you are on the wrong end of their meddling. And most of their population doesn't care or even notice, so happy or unhappy are they in their utopia. Really, tons of material to draw parallels from, to all sorts of things in our lives.