And what about people whose first-born was healthy, yet their second, third, fourth, etc. child has a disability? Or people whose first-born has a disability? Is god "punishing" them for the hell of it?
Seriously, fuck this guy. Dehumanizing people with disabilities by reducing them to a mode of vengeance is exactly the kind of thinking that leads to abuse, institutionalization, and forced sterilization. They're human beings, asshole -- not punishments.