I’ll bite, as a card-carrying TERF (ie no entry to female-only spaces. This does not mean ‘No entry anywhere, under any circs, and kindly go away’)
Biology matters above pretty much everything else, really, given the demands made.
But on your specific point, yes we all know chromosomal anomalies do occur and this has never been denied nor was it ever wished away.
These cases though are not transgender individuals.
‘Transgender’ is dangerously and irresponsibly being employed increasingly as a catchall term for anyone not adhering to the strait and narrow in terms not only of gender presentation, but also sexual orientation, and as we see here, chromosomal idiosyncrasy.
Quite why this'd be the case is open to question, though census findings spring to mind, and the uses to which resultant statistics are put.
Anyway, Enjoy your wine.
Ive certainly used up a month’s allowance of ranting for one day.