ByCraftyMaker I’ve spoke to some friends about my history and it’s not come up for others. It’s not the same for everyone, but being trans isn’t a huge part of my identity. I see it more as how I got to who I am now.
Don't you see it as problematic that 'who you are now' is a man who presents as a woman, but you don't think it's all that important in forming friendships, it's not a huge part of your identity?
Leaving aside the issue of interpersonal relationships, it's pretty important on a practical and legal level: for instance, you do not have the right to use facilities that are designated for women.
An 'internal sense' that you are a woman doesn't count, 'sex'=biological sex, which can't be changed.
A good friend to women and a responsible human being - which you seem to be, I appreciate the way you have interacted in this discussion - would respect the specificity of life as a biological female, and would, for instance, stay out of single-sex spaces that are designated for biological females only.
You may do that already, I would like to think that you do, but you will admit that a whole, noisy, occasionally violent social movement has grown up around men who have the internal sense that they are women co-opting women's experience and identities, and refusing to stay out of women's spaces.
That's huge.
And in answer to one of your points: yes, if I was developing a friendship with anyone, male or female, the fact that I am a lesbian is an important aspect of who I am - not my 'medical history' as you bizarrely call your identity - and it wouldn't be much of a friendship if that aspect of me somehow just didn't come up in conversation....