Well, for one thing, her butt is the last thing I want to look at, and its very clean. I don't touch it either. It doesn't bother me one bit.No one is forcing me to look at it either, and its not up 24/7.Our first dog was a non-GSD with a curly tail. We swore we would never again get a dog whose a$$hole we would be looking at for 13 years.
Its normal, just a fault. My female GSD also has a curly tail, I think it adds to her personality.
Here is my girl: