"I barely put up with M/F/Other, but when a MEDICAL provider starts asking me the other crap about "gender identity" and what have you, I question their ability to provide me competent medical care."
Yeah, and I disagree with that.
It may not be relevant to you, but it is very relevant to other people, and many of those people struggle with mental health because of gender dysphoria.
We may snigger at the concept, but there's no denying the fact that people who sincerely consider themselves to be incorrectly gendered have a markedly increased rate of emotional and mental health issues, suicidal ideation, and successful suicide attempts.
And all of those are legitimate issues of medical concern and it points to the doctor being proactive.
Your perceived outrage at being asked those questions is misplaced, as equally misplaced as if you were to complain about them asking about potential cancer activities. "I don't have any cancer risks! I don't smoke! My family has NO history of cancer! I really question my doctor's medical competence for asking such intrusive, baseless questions!"
How are they supposed to know if they don't ask?