That entertainment industries are filled with people like this suffering while being ridiculously successful is a universal across virtually all media.
Do personality disorders count as mental illness, or are they distinct?
Psychology is fad based, mostly bullshit and still not able to deal with the fact that correlation does not imply causation.
So to answer your question: who cares, these people need help.
It is controversial to claim that someone with a "personality disorder" needs help.
See: https://en.wikipedia.org/wiki/Egosyntonic_and_egodystonic
I don't think that's accurate. A "personality disorder" doesn't necessarily involve anosognosia, nor is it limited to things that cause conflict with other people like borderline or narcissistic personality disorders.