> So peace is bad because the world fails to implement that?
This is called a strawman argument. Peace is a moral imperative. It's software equivalent would be "delivering high quality software on schedule". Agile (or what people believe agile to be) is a system of achieving that goal.
Peace is a goal, and not a system. If your system for achieving "peace" is a police state, and you find that your "adversaries" are always able to overcome or work around them, eventually you may realize that the police state (tyranny, authoritarianism, etc.) is ineffective in creating a stable peaceful state.
That doesn't mean that achieving a peaceful state as a goal is bad, or necessarily impossible, but that the method/system applied to achieve it was not effective.
It's not black and white. Organizations can still benefit from discussion and reflection even if they can't fully be Agile.