I have 5 drakes. Not a single one is like what you have described. I am not saying that there are not ones like that, but overall, from my experience as well as others that have had them for much longer than me, not the norm. Drakes that are abusive should never be bred. It continues those traits. We are very careful to pay attention to this when choosing our breeding stock. As I try to place all of my personal ducks and offspring into "pet" or "breeding" homes, this is extremely important. I won't have an aggressive one.
In addition to the noise? Muscovy do not quack. The males hiss, and the females make a warbling/trilling sound. The females can quack, when startled, but nothing like a mallard derived duck. I live in city limits, in a neighborhood. No one knows that I have them, as they are so quiet.
Most drakes, regardless of breed, tend to be incredibly "randy". But I have watched my drakes mate with the females, and it has never been brutal. Again, yes, there are males like that. The male that Tom got has been very kind to his females, as I know him (the duck, LOL) personally. I think having a natural habitat as well, allows females the opportunity to get away from males that are not "respectful". The females are MUCH quicker and more agile, and can fly much better, that the heavy males.