Mark Travis on Political Ponerology

[Mark Travis]

I just googled "functional psycopathy" and the first result was: https://onlinelibrary.wiley.com/doi/10.1002/joe.21897

They're using it differently than you. Your usage is essentially, "acting like a psycopath would while not being a psycopath," vs theirs is the behavior of psycopaths who are able to function in society.