Not necessarily. Systems can become amoral even if actors in the system are moral. Consider corporations. Their fitness function so to speak is to amass capital, as much as possible in fact. Even if everyone inside were moral, they are tended towards actions that increase capital, while not necessarily having all the responsibility of the decision, and so their morality does not come into play, because they don't know the true extent of their decisions. Responsibility throughout the organization therefore diffuses. It is like an ant colony, where each individual performs actions whose combined effects give the entire system some sense of individuality separate from its components.