That link is full of B/s
I'm all for equality; punishment should be equal for all regardless of afflictions, diseases, psychiatric problems, skin colour, religion, etc, etc, even gingers
So if someone gives two pounds of smack to a toddler and asks them to carry it through customs the toddler should be killed?
Some "afflictions, diseases, psychiatric problems," produce adults who are no more mentally capable than a toddler so if they die so should the kid.