[Pieman103021]

Not OP, but I can tell you why your comment seemed armchair-psychologist-y to me. The issue is saying "it doesn't seem like her problem is actually X, it seems like it's Y." You read a short article written by someone who, based on the tone and explanation up top, was not in the best frame of mind.

The bigger issue with your comment from my perspective though is that you said "But it seems to me that they're still some way off from understanding their condition", which to my ears is just demeaning. Someone posts an article about leaving a community, with a lead in explaining their state of mind as of writing it, and your response comes down to "sounds like you don't understand your condition you were recently diagnosed with".

Personality disorders are hard, they don't go away and they can take years to get a handle on. When the top response to your article where you mention your disorder is someone saying you don't understand it, it becomes that much harder.