// That doesn't, and can't, ever change somebody's sex. I know you know this. I don't understand, honestly, why you pretend to think it does. //
I don't think I make any such pretence, or at least, if I appear to have, then I apologise. I suppose the point is that I don't see that calling someone he/she etc, outside medical contexts that are usually nobody's business but the patients, is about their sex chromosomes and/or their genitalia. If you use he/she to identify biology then that's your choice but I think outside that we might not disagree as much as all that.