Ok, seriously, don't open your mouth if you don't have a clue what you are talking about. These are GENETIC disorders, meaning if the parents have or carry the genes for them then it's highly likely the puppies will have issues down the line.
My boss has a mini schnauzer that at 2 years old developed cataracts and is now blind because he bought from some byb who didn't care about the issues that commonly plague the breed. My breed of choice, APBT stands at about 25% displaystic of dogs tested. I could show you xrays of a great dane puppy who was put down at 4 months old because his hips were completely out of the sockets due to careless breeding and he was in extreme agony.
But someone thought their dog just needed to be bred because it was cute or they wanted one just like it. They don't bother to think or care what happens to those dogs over the rest of their lives or how many more dogs are produced as a result of their litter. Out of sight, out of mind right?