I agree about choruses and refrains. Very often, less is more.

However, let's be wary of looking for rules where, I suggest, there should be none. One of the interesting things about songs is that no two live renditions are exactly the same, and probably no two people in an audience are hearing and feeling exactly the same emotions when listening to it. Sometimes, they are clearly hearing an entirely different song, and they are going to react to it in different ways.