I think public executions where the prisoner is tortured to death are more progressive than supposed “humane” methods.
Not because I like cruelty or think they deserve it, but I want the State to do it’s killing out in the open where citizens are exposed to what’s happening in their name. Hiding the act behind closed doors and beneath a cloak of “humane” methods allows the State to exercise ultimate authority in secret from the people from whom that authority is derived. It’s the State and the supporters of the death penalty that are being spared pain.