the court had to apply the law. This is how the courts work. The law can be absolutely ridiculous but it still has to be upheld by the court.
In effect this is what has happened here. They have found the Sex Discrimination Act provisions apply to those "identifying" rather than biological reality. The court has decided that this is the way the law reads and that is what they need to apply.
This may be reversed when the matter goes to the High Court but, until that happens, any man who identifies as a woman will have the right to enter female only spaces. Could a woman who identifies as male enter a male only space too? Yes, under this ruling it could happen.
Transgender people are thought to be less than one percent of the population but the ruling has much wider implications. We already have men in women's prisons. They can be housed there even when they have perpetrated crimes, especially sexual crimes, against women. This ruling makes it even more likely this will happen. All that will be needed is for someone to "identify".
It means those who "identify" will also be able to enter shelters for women. That these shelters are intended to protect women from male abuse and violence will not cover the male who identifies as female. Men who identify as women also have access to spaces where a woman should be able to quietly breast feed an infant.
Whether you think all this is right or wrong is up to you but the present ruling could go even further. All the moves to see more women on boards and in other positions of authority are now potentially at risk. They could be taken by anyone who identifies as female. All the "diversity, equity and inclusion" work everywhere is now going to be subject to the demands of someone who identifies as something other than what most people see as biological reality.
I am not sure if the DEI issue has hit home yet. Most people who just see the Giggle v Tickle judgment as "wrong" will not have gone that far but there are some who have. It is why there needs to be an appeal and that appeal needs to happen quickly. How the High Court will decide is their affair but I suspect there are some members of parliament who are preparing for a means of reversing the legislative changes brought in by the Gillard government.