Most of the "breeders" that are posting on places like Yahoo answers and such will likely never produce viable young, and those few that do won't do it more than once since they'd also have to find buyers which can be a headache.
There will always be some unscrupulous breeders, just like there will always be owners who don't give proper care to the new pet. That doesn't mean all of them are bad, or that all people should stop breeding.
Also, very few ball pythons have inherent health issues. Spiders live long happy lives, or at least as happy as we can determine any reptile is. Yes, once in a while a clutch may end up with kinked babies, but this happens occasionally. It's a risk. Any breeding of any animal carries that risk.
You can't compare humans to animals, but if you were, it's like saying that since some kids may be born with a defect, no one should have any kids.