People frequently misunderstand me for someone who is lacking emotions.

I can't speak for Karp but I just experience and express them differently.

He may be on the psychopathy spectrum. I don't know. But it wouldn't surprise me if people are misunderstanding him.

Given you're making assumptions that he is on the psychopathy spectrum here, I will assume statistically that's unlikely and it's much more likely that people are simply misunderstanding him in ways people often misunderstand neurodivergent individuals.