@GreenAndPurplePeople
If you answer the question "are you a woman?" "yes", that's your gender identity.
But that’s not what you originally said. You posted a link to a paper that gives an accepted definition of gender identity. Now, you’ve changed your mind and given another definition. Why is that?
No. One is the definition, the other is the answer to the question "how do I know what my gender identity is?" One follows from the other.
For example, with sexuality. The defintion
"a person's identity in relation to the gender or genders to which they are typically attracted; sexual orientation."
The question:
"Are you attracted to men, women, both, or neither?"
@Tomatalillo
"If I turned up to operate on you, say for a vasectomy, put a camera up your urethra or to conduct a heart transplant, would you let me go ahead if said I feel like a surgeon, I identity as a surgeon, oh but I am not qualified and have no recognised training?
If not why not?"
The word identify has two meanings.
"establish or indicate who or what (someone or something) is."
"associate someone or something closely with; regard as having strong links with."
The "identity" in gender identity is meaning one.
The "identity" in your example is meaning two.
@Delphinium20
"Reminds me of a lesson I was taught as a young girl in a religious school. But we were talking about souls. While the concept of souls was almost universally recognized by Christians, this lesson was a way to show that the non-Christian souls were lost to Satan. But then I grew up and stopped believing in souls, but I'm sure that doesn't stop some Christians from thinking I still have a soul and that my soul is lost"
It's more the other way round. Sexuality and gender identity are well-established, and found to be heritiable and innate in twin studies. Not believing in gender identity or sexuality requires an pseudo-religious (and often religious) commitment to an ideology, in this case biological essentialism and gender critical feminism.
@ Blibbyblobby
Before the terminology of sexuality existed, heterosexuals thought of themselves as normal, and that homosexuality was a perversion or abberation. Many people strongly resisted the term "heterosexual" because they thought of it as normal or natural. But no one would deny that people were gay or straight before the terminlogy was invented. Likewise, the people who get upset with the very neutral term "cis" are upset for similar reasons.
If you are cisgendered, there is no internal conflict between your sex assigned at birth and your gender identity, therefore you take your gender identity for granted, just as people took their heterosexuality for granted. The definition doesn't care whether you attribute your internal sense of sexuality or gender identity to the natural order of things or biology.