"...complaining about windfarms based solely on their cosmetic apppearance."

That rather implies that complaining about them because of the way they look would be unreasonable. I think it would be perfectly reasonable. But in fact they look rather good, generally.

Taking account of how they look in particular places is fair enough. There are some places where any kind of construction would be wrong. Those are the kind of places which wouldn't be in anyone's backyard.