No...I tend to disagree there is a lot of validity to the saying, 'he who has not sinned, let them be the first to cast a stone' is exactly what should be applied to in this case....This is a moral issue and does not deserve the punishment being advocated.....now dont be a numb-skull and retort that would it apply if he had murdered etc blah blah blah....After his initial bragging he has expressed his desire to be forgiven let society if it has sympathy and maturity then let it rehabilitate him....any life is not ours to take.
Do not just blah blah the saying as it is not compatible with ur faith....the reason being is that it stops us from acting like hypocrites.....peace