Interesting link!
I do notice that the focus seems to be on BPD and NPD much if not most of the time. Understandable, because these are the seriously high-maintenance people who are also out in the mainstream grabbing for attention and resources.
But there are other PDs, and they're quite different. Avoidant, for instance -- these are people who find most other people so painful to be around, so unaware and uncaring, that they'd really rather not bother. Not worth the pain, 90% of the time. They become recluses, etc.
That's very very different from the diva-driven drama of an extreme borderline.
Anyway, I'm rambling, but I wanted to point out that not all PDs are the same - and there are folks with other kinds of PDs, or traits for them, who have a great deal of insight, are fighting heroically towards health, and deserve all of the support and affirmation we can give them.