That doesn't mean that sex should be the ONLY indicator of female identity.
OP could you please, in your own words, explain what you mean by "female identity".
Because I don't believe I have one. My sex being female tells me only that I belong to one of two human sex classes, and which biological functions my body has that my husband's doesn't. And which health issues I may experience due to my sex being female and what I have to do to avoid falling pregnant.
FAOD, I fully understand your insistence that a female identity is not defined by sex alone, which is on par with the doctrine of gender identity. I understand what you are trying to say with that, too, and why according to your belief system a male person can have a female identity and thus be accepted as a woman by you.
But what is that male or female identity if it can, as you believe exist independently of the body it inhabits?
Do you believe this identity has a material origin which means it stems from a sexed brain that can occasionally arise in an opposite-sex body, or does it have an immaterial origin which means it stems from a disembodied but sexed metaphysical entity that can also occasionally inhabit an opposite-sex body?
And how is it defined as male or female if this is not based on inhabiting a male or female body?
I understand myself as a woman, because I am female. I am not stereotypically feminine and first took a public stand against stereotypes when I was nine or ten and realised that I was being discriminated against at my school because I am female.
I was dysphoric as a teen and sought to identify out of womanhood, but of course I was no different in that to many of my peers. In my considered view, it was a logical, natural, defensive and arguably healthy reaction to the sexism and male sexual violence prevalent in the society I grew up in. (And yes, I did meet both the old and new diagnostic criteria for gender dysphoria.)
I learned to manage that dysphoria over time, and eventually reconciled with being female. Without ever accepting the stereotypes imposed on my sex.
I have taken various tests that purport to ascertain whether I have a male or female brain or whether my personality is shaped around masculine or feminine traits or more recently, what my gender identity is. All of these tests tell me I have a very male brain, I favour masculine traits, my gender identity is apparently that of a man etc etc.
I am most decidedly neither a man in body - the children I grew and birthed and nursed with my female body can attest to that - nor in spirit. Leaving aside my militant atheism that means I do not believe in metaphysical entities, I wouldn't know how a man feels because I am not a man. My brain is a woman's brain because I inhabit a female body. My feelings are a woman's feelings because I am a woman. My thoughts are a woman's thoughts, because they happen inside a brain inside an adult female body. My interests are those of a woman because I am one. Even if society ascribes them to the male sex.
By the way, all of these assessments, every single one of countless tests available come to the conclusion that my brain is an extreme male brain because the parameters assessed are sex stereotypes and sex role stereotypes and the tests seek to gauge to what degree I conform or do not conform to them. Nothing more, nothing less. Stereotypes, hundreds and hundreds of them.
(If you have a link to such a test that isn't based on stereotypes, I would be interested to see it.)
I am asking because I want to understand you. Because I believe we cannot meaningfully engage without understanding each other.