My therapist encourages not getting hung up on the diagnosis, so I am not. It is just a phrase to encompass many difficulties. We are all (all people, with or without a diagnosis) in different places of personal development and personal growth.

I read a book written by a therapist who had his students interview one another and then make a diagnosis based on that interview. The students were dismayed because they felt a diagnosis on Tuesday morning may be completely different from a diagnosis on Saturday evening!
Which was his point, exactly. We are fluid, ever growing and changing, learning, and trying things out.

I have grown a lot and feel like I have much better emotional regulation, but I do feel like the diagnosis still fits. So then what? I am also fine with just a diagnosis of depression with anxiety, even though that doesn't convey the intensity. IDK, the diagnosis is for the insurance companies anyway. Most don't cover personality disorders, so the therapist takes parts like depression or anxiety to use for billing.

Okay, to answer your question (finally!! lol) I don't like the term emotional dysregulation because to me it implies an unwillingness to calm down, get it together, stop that, buck up.

Anger and fear seem to be what drives most of my stuff, so calling it depression and anxiety work for me.