My bone of contention is that a large part of uke's role should be to simulate an attack. That is a situation of disharmony. Whether they are using internal aiki principles or not, in order to allow nage to train effectively, there needs to be some disharmony created. That's all I mean.
Or they are creating the opportunity for someone to learn something by simulating an attack. Assuming the other party wants to learn something, then I fail to see the disharmony... i.e. there isn't a victim here.