It is the rescuers who have to clean up the messes left by these breeders.
Here are a couple of my own rescue Bs I have at home:
1 young male tested probably affected for Fanconi-born just after the test came out-November 2007, also has some socialization problems and has a curved back which will probably cause him problems as he gets older, had undescended testicles and were way up in the abdomen area. BYB bred but bought by USDA breeder/dealer who got rid of him and many other male Bs.
1 young male has esophagus and digestive problems-must eat level with his body as I put his food bowl on a coffee table for him to eat, takes Prilosec and Reglan, eats Prescription Intestinal Food, is blind in one eye from PPM and other eye problems, has dry eye-KCS in the other eye-takes Tacrolimus eye drops . Dam was bred by USDA breeder/dealer who has a cataract in one eye but thankfully will not need surgery. Breeder got out of the business.
1 older male has an autoimmune disease of unknown origins-on Prednisone and Azathioprine, now is developing other complications. Dam was bred by one breeder and owned by another when he was born per AKC registration-Was owned by at least one USDA breeder, littermate was sold at a MO petstore. Born in January and the breeder was stuck with most of the litter due to them not being Christmas pups and at different times of the same year sold most of his relatives.
I kept the older male as my own pet when rescued as a pup. The two young ones became my own pets once I learned of their health problems. Both were rescued as older pups.
I am sure my situation is no different than other B rescuers.