solipsism

Not looking it up, it's a worldview where only the person themselve is valid. Kind of like hedonism but without the joy or like utilitarism but without the concept for people.

they can’t be cured.

I like to think of zombie movies as reflections on that problem. They imprint that there is no healing.

once you get to this point

Is it space or matter? You cannot unmix a drink but you can distill the alcohol and you can reverse a position unless it's near a black whole.

If we cannot reverse nazis then we lack enough knowledge of the mind. There must be a reason that somebody is rejecting truth, reality and the existance of other people. If we can identify that and show that it is irreversable then punching may be necessary. Otherwise we have found our own way of ignoring humans.

Think Musk and his daughter. It's all political but at the core it's hurt feelings.