I think that, everything else aside, the term "personality disorder(s)" is like many in psychiatry/psychology, it is somewhat misleading and can create misconceptions.

I've heard it described in the professional literature as related more to how one interacts with others, thus more of an interpersonal phenomenon (so like an "interpersonal disorder").

The concept of personality (at least in the U.S.) tends to carry a lot of social value judgment baggage which isn't related directly to MH issues, IMO.