And he literally just got done telling her that he really is that way, and how it came to pass. He committed horrific psychic self-surgery on himself to cut out most of what makes human connection possible. He was a kid and had reasons for doing it, but it doesn’t change the fact that having done it turned him into someone who yes, absolutely would murder someone who was a potential threat to his existence-as-he-knows-it. Even an abstract threat like ‘connected with him in a way that risks rebuilding some of the emotional terrain in his own head that he deliberately burned to the the ground.’