Pyschopaty never existed as a diagnostic.
It's akin to a doctor diagnosing you with "sick". It is nonspecific, arbitrary and useless to inform treatment or prognosis. It was used as a descriptor by very early psychiatry, but it was never a distinct diagnosis.
Chinese food is a hard one to compare to. Since western Chinese food is not entirely Chinese and more a Cantonese fusion that was invented in new York then exported worldwide. Its main feature being adapting local ingredients to the same base template. So it is always different depending on the region. In China it is considered a form of western fast food and not at all traditional.