In that photo, the dog is “stacked” (in show pose), so the slope may not be so extreme when in a natural stance.
With that said, I want to slap some sense into GSD show breeders. AKC is pozzed as #$%@, UKC has more of an emphasis on healthy working dogs. In GSD’s I wouldn’t pay money for anything but Euro working lines these days.
They ran that way around the ring