They are, because there is no 3rd sex.
People are the sex they say they are, and it's important.
The Supreme Court heard a journey into the hypotheticals and outlier cases such as 'pregnant man'. Crawford for Scottish Ministers rather embarrassingly got herself into difficulties just before lunch and was unable to resolve after lunch. Had Dr Victoria Mcloud been permitted to speak - she applied but was denied - she would have settled the supposed difficulty with ease. The gender identity of the new parent is disapplied under the act ...
12Parenthood
The fact that a person’s gender has become the acquired gender under this Act does not affect the status of the person as the father or mother of a child.
There was a case of a trans man (probably the same case) where the new parent wished to be identified as the 'father' of the child. The court upheld the GRA. The birth certificate reads 'mother'. It can be readily understood the court upheld what parliament had clearly intended.
If we now journey into outlier cases I'll ask you to consider the following because we've seen that you love an outlier case ...
Boy meets girl. Boy and girl fall in love. Boy and girl marry in church. Boy and girl try to bake a baby.
They fail. Fertility testing shows that she has a dsd- one which you say makes her 'a man'. Both are shall we say 'somewhat surprised'.
But they have been married in church, what shall we do? They wish to continue to be together in their marriage.
What shall we do? Convert their marriage to a same sex marriage? Oh wait, the CofE doesn't perform same-sex marriages. Quick jail the vicar. No? Do we forcibly annul their marriage? Yes, because that is the only logical conclusion based on the science - under the law according to AuroraSaab. But wouldn't this be beyond insulting right? mmmmm,- scratches chin.
And in the future all people must undergo testing before they marry, no let's make that date, make that attend a single sex school, make that go for a pee, make that get a birth certificate, make that in utero.
You could try listening to a sage such as Tony Blair. Tony Blair has convinced Keir Starmer that only men have a penis, and only women have a vagina, so that's it settled then? And I dare say that Karen Joanne Rowling will be made happy too.
Science didn't end at SAT level 1.