I find myself uncomfortable at the idea of a medical diagnosis being used as a descriptor for people who exhibit related behaviour.
Never having interacted with a psychopath in any meaningful way, I suppose I have the luxury of being vaguely repelled at the implication of such statements that there is a class of humans who by virtue of characteristics at birth are essentially inherently evil.
(Edit: It reminds me too much of the Sheri Tepper book in which killing “soulless” babies was both a boon to society and even a mercy to the babies themselves.)