Good point. He felt free of social constraints and acted, he felt, rationally. However, those yet maintaining society could not comprehend his acts as anything other than psychotic, since they were outside the realm of their conception of rationality.

That ending scene I resolve in my own mind by him understanding that to the rest of the world, to his daughter even, nothing he did, no matter how principled and ethical, could be understood by them within their social paradigm as anything but evil.

Taking the red pill in a world where everyone else has taken the blue pill means you are the bad guy. That is a disturbing truth!