I don't disagree, but his conclusion isn't that people aren't genuine psychopaths. It's that the term has been conflated with so many non-psychopathic behaviors that it's starting to lose its meaning. In the same way classifying pick up lines or not agreeing to sleep with someone you don't find attractive as rape diminishes actual rape, misusing and overusing "psychopath" as a descriptor diminishes the horror of actual psychopaths.

Could have been worded better, but I get the point he's making.