Yes, I think there needs to be a diagnosis, "gender dysphoria" or whatever to sort out a suitable treatment plan. I mean you've got to call it something and start somewhere. Of course only you can know if the diagnosis sits well with you.
For me it was a help to know that there wasn't any underlying mental health issues, and I didn't mind the label as I already identified with it.
A clinical opinion is just an acknowledgement that what we are experiencing is real. It offers up some protections and maybe new ways to explore our feelings that we didn't have access to before. A gender therapist, HRT, surgeries, if those are the paths you want to follow. For everyone it will be different, so hook up your GPS girl, only you can plot the rout and destination, it might cost a bit to get there, but at least your on your way.
Just my ramblings, but that's kind of how I felt after similar assessment results.
shy