So what are we doing here, entertaining a scenario in which someone is defined to be totally irredeemable and malevolent and the only solution is to burn them alive - and then you seem surprised when someone advocates burning them alive?
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'