When we were looking for a GSD breeder, we did not want an oversized GSD or one with a sloping back because of the health problems.
Now when we walk our guy, people often stop to chat and i hear the following way too many times 'oh, my friend has such a BEAUTIFUL GSD, he is a king GSD, so large, he is 8 months and already the size of yours and his parents were so big, he will weigh 130 punds for sure' (i leave it at that, but in my head i think... imagine the health problems... why would u intentionally oversize a GSD??')
Another one i often get is 'oh is that a pure bred??? cuz his back isnt sloped.... the real GSDs have sloped backs'....
People's bias towards 'looks' creates a demand for dogs that look good, not dogs that are healthy... and as long as demand is there.... there will be people to capitalize on that and breed dogs taht look good but have a myriad of health issues....