I am female,
You've explained that you are a TW, so unless you weren't being honest about that, you can't be can you? Female is a biological fact, not a choice of label. It's also deeply appropriative. I doubt you'd appreciate me as a biological female insisting I was a TW after all - I could not possibly be, and it would be deeply disrespectful to people for whom this is their reality, and appropriative of their identity, language and lived experience.
the way the world is going now gender specific bathrooms will probably be a thing of the past.
There's no such thing as a gender specific bathroom, they're not generally separated by gender choice. There will for the foreseeable future need to be sex specific toilets (bathrooms is a very American word, is that your homeland?) although I'm very much in favour of additional mixed sex toilets and spaces for those not happy to use those of their birth sex.
In the event that there was not sex specific toilets of course - what would you do with the large numbers of female people who no longer had access to any toilets? Often because of issues of race, culture, disability, trauma as well as those who just want and need basic privacy from biological males when undressed and vulnerable?
Those females are also tax payers, entitled to have their needs met, and of course it would hardly be just to deprive many female humans of any provision in order to ensure male humans had access to all the provisions for their better happiness and inclusion. There's this whole problem in that biological females are a thing too , in fact they're 51% of the human race, and they're not just an afterthought in the primary aim of ensuring male humans however they define are supplied with everything they need.