(Trigger warnings)
I have an emotionally abusive father, and a mother who is a recovering addict. They live in a world of codependency. The dissonance between the obligation and expectation of me growing up, my studies, and what I wanted to do was so large that it took me to crisis point.
Looking back now, it was driven by not fitting what was expected of a man. Yes, I could do maths, but I didn't enjoy it. I could do science too, but I was only interested in biological science, and that got dropped because it didn't lead to a worthwhile career, and "all worthwhile careers" were "manly": engineering, or a pure physical science - at a push computing (yes this was in the dark ages)...
My late childhood was a mess! as a result, I spent 18 months on antidepressants, deliberately went non-contact and that probably saved my life. At the time it was do or die.
What I had learned was the abusive triumvirate: Fear, Obligation and Guilt.
Applying these principles :
We feel obliged (thanks to our birth gender), to fit a gender expectation.
We are frightened, when we discover that we don't.
We feel guilty when we do things that are not expected by our gender expectations, and become frightened, because we have not met our gender obligation, and the spiral continues.
A diagnosis would grant you permission to be who you feel you are, without guilt. This would break the cycle, as you would have been relieved of the burden of your cultural obligation (shame).
As the diagnosis would be from a trusted person in authority, (a professional gate keeper of what is "normal" aka a psychologist), it could be more acceptable to local society as a result, but YMWV with that.
The support groups I have been to, have been happy that I was respectful, interested, and wanted to learn... And I met some lovely people along the way.
Sno