Taking the medical analogy seriously. What must it have been like to operate on a patient without anesthetic? To touch the skin with the scalpel, or saw, and feel the whole body stiffen under your hand, to hear the preemptive scream, and to go on and not be distracted. Given the effect of the satiric edge, would a kind person hesitate and draw back? What if it hurts the other? Keep going. If the purpose is to heal what is deformed or corrupt, it will hurt. Surgery was consensual. Public torture was not, at least not for one dismembered.
Satire today may be as important for the health of the body politic as is judicial torture. Both require a personality type that some may find sadistic or psychopathic. But can we begrudge the professional the pleasures that come with an important social role?