Here is the thing about labels. In a perfect world labels would be unnecessary but we live in a world/country where labels or lack of them can cost us.
Prime example: I was out of work for several months. The time was well spent. I went to lots of therapy, learned lots of tools regarding mindfulness and coping and I worked hard.
Then towards what HR considered what I would be covered for (I found this out later by the way)
This got complicated for me, because of how hard I was working, I started to have dissociattive flashbacks still considered PTSD.
I had parts reaching out to me, children, who are quite delightful actually talking to me so much the only way I could keep things straight was to talk out loud in response. There were flashes in my sleep, that are a bit complicated to go into all the detail. Alice started talking to me, the Poet, Peggy who is four ans the Poets shadow, whatever that means, Smug who I knew from years ago and is a sarcastic and critical but sees himself as quite witty and Rage. Rage was not a what but definitely a who. I was have this flood of information coming in and the therapist refused to acknowledge this was happening to me and wouldn't work with me when I asked for testing which is out there to help me find out just where I fall on the scale.
Because the therapist couldn't "meet" anyone and she did request to she would not back up my claim I was going through this. The last six weeks I was out before going back to work, my claim was denied and I lost 6 weeks od pay.
So yes labels are necessary for HR, proper treatment and any other ass covering one might need when dealing with HR and insurance companies.
I wasn't trying to "work the system" I wasn't aiming for disability. I was / am trying to do the work to be whole and for once in my life discover who I am.