@RobinMoiraWhite what about the HARM that having a legal fiction on paperwork does to trans people?
What is the benefit of e.g. having "female" on medical records so that when a person with a big belly and a beard and abdominal pain presents in A+E says "I'm a trans man" the nurse doesn't pick up on the implications of that because the medical records said "M"? By the time anyone realised that the patient was actually female, or that the pain was from labour from a cryptic pregnancy - the infant had died.
If the medical records were correct the first thing a triage nurse would have excluded would have been pregnancy.
Facts are facts, sex is sex, and muddling up paperwork has serious consequences.
That baby died, and it should not have died. There are multiple examples of harm being done because of the wrong sex marker on medical records. I'm sure you're aware of them.
Who benefits from getting delayed or inadequate medical care?