I'm happy to judge somebody on their output and not their credentials. But when their output includes lying about their credentials, I'm definitely going to judge them on that as well.
I could see how being more consciously aware of the distortions would make one better at manipulating media narratives and organizing complex groups of people. It would seem to have less to do with being a psychopath and more to do with being smart enough about how people work to recognize your own flaws.
'Lying' implies some intentional deception. While saying something that is not factually true is part of that, the intention, motivation and awareness of the person would constitute whether it was a 'lie' or not. At least, to me, it's always been that clear.