Yea. It’s more like if this person can’t be studied or has no use here except to haunt the living, sure. Get rid of them. Some of them want that. Some psychos know how bad they are to society.
But then you have a lot to weigh in on. You said it shouldn’t exist at all. Which for the most part I do agree with. But there are some that I am ok with going away.
Hitler was not killed in action. He killed himself. People like Dr. Death or the rest of his inner cronies can be executed as well.