The case is about the definition/redefinition of 'mother'.
If mother means 'person who gives birth' then Freddy is the mother of the child.
If a court rules that mother means 'person playing a gendered role' and Freddy gains the right to have 'mother' legally handcuffed to 'gendered role-playing' instead, then, all mothers are redefined in one fell swoop as gendered role-players.
Much as female and woman were redefined in 2004 as identities.
The implications are obvious.
All remaining labels for female humans would be untethered from actual female humans and granted to any male humans who meet the newly anointed role-playing definitions. Any female human wishing to avail herself of her legal rights and recognition relating to those labels has to do so on the basis that she agrees she is now a gendered role-player along with all others using that label in the now mixed sex category, and that her biology is entirely insignificant in relation to the label.
And all members of the female sex are legally untethered, adrift from any remaining label that recognises them in the law.
You can be recognised as a gendered role-player alongside members of both sexes in that category.
Or you can be entirely without label, unrecognised by the law.
But there is no longer ANY label anchoring women who give birth to any rights or recognition.
Labels perform the essential function of anchoring laws and rights to distinct, recognisable categories of living, breathing people.
If you untether a distinct category of people, an entire biological sex from their label, and then tie another group to that anchor, you set adrift an entire biological sex from all legal recognition and protection.
That applies to every girl and every woman.
Every last reference to our biological sex is being obliterated in law and replaced with references to 'identity', 'role-playing', 'presentation', 'psyche'.
Female and woman became terms that could and did apply to male people from 2004. They were detached from sex and redefined as terms of 'psyche'.
Mother is legally still tethered to physical sex.
Of course there is a huge battle to untether the remaining label that is evidence that the law recognises female biology.