No, not really. Because if they asked me directly “hey, should we kill this motherfucker?” I’ll say no. Even if I had supreme, absolute power. I’m the kind of guy who will catch scorpions in my house and release them in the wild.
I was just putting what the OP said into perspective: “how can ANYONE kill a poor person who burned alive innocent people in such a BARBARIC way that is by hanging?!”