Seven of mine are retired breeder animals and the health problems that some of these have are unreal. One of my females has the knee deformity in both legs and she has clearly had multiple births. Many a time I have wondered how their progeny have developed.
I'm sure a fair portion of the breeders really don't care (as also evidenced by the fact that they often dump the no-longer-useful dogs [who have for the most part never even seen daylight] by the side of the highway and hope that someone finds them before they get run over or starve to death).
I share your anger on this.