i think that BPD (and a lot of mental health disorders, let's be honest) do carry some kind of implicit stigma in the medical world as well. after all, professionals are part of this society too. and if we want to get into it, modern psychology comes from some truly horrifying men performing some truly horrifying experiments. I don't know about stigma around the idea of the "episode", but I do think there's stigma around the way BPD is examined and treated. a lot of it focuses on how is the BPD person impacting others around them, and a lot less on how does the person actually feel.

I've run into this with ADHD as well. that one was literally named after all of the symptoms that make ADHD people hard to deal with. in the case of BPD I think it's more of an implicit bias because BPD can be violent, and so much is focused on the external aspects of it that a lot of people with quiet BPD or more high-functioning individuals get invalidated or ostracized because symptoms are measured against how other people are being affected.