> There are many definitions of what a "doctor" could be
Right. So if you ask somebody, "Do you sincerely believe that a person becomes a woman simply by self-declaring it?" you need to tell them which definition of the word you're using, or they'll be talking about something different from what you think they are.
This is, again, absurd. According to the definition that a doctor is a person performing witchcraft, do you sincerely believe that a person performing witchcraft is a doctor? Do you sincerely believe that a true statement is true?
Let me then rephrase the question: Do you reject the definition that a doctor is anyone who proclaims himself to be a doctor? This is, again, an absurd definition of what a doctor, a woman, or really anything could be.
So let me broaden it: Not only do I reject this type of definition for doctors or for women, I reject any such circular definition as absurd. You don't?
Right. So if you ask somebody, "Do you sincerely believe that a person becomes a woman simply by self-declaring it?" you need to tell them which definition of the word you're using, or they'll be talking about something different from what you think they are.