What does it mean? Because if laws are based on this then we need to define exactly what it means.
There is not an agreed upon, or even coherent, definition of man, woman, lesbian, homosexuality, non-binary, transwoman, transman, gender, or gender identity.
As soon as anyone starts to define them, they have to rely on either circular definitions, or definitions that cancel each other out.
A lesbian is a woman who is sexually attracted to a woman, or if that woman is a man who identifies as a woman, and so is the woman they are attracted to. Who could be a man, or a woman.
And what constitutes a woman, or a man??
Does 'living as a woman' mean a biological woman. Is a woman who identifies as a man living as a woman when they give birth? Or is a man who identifies as a woman living as a woman because of clothes?
Is a woman, who identifies as a woman, living as a woman because she gives birth? In which case a woman who identifies as a man and gives birth must also be living as a woman.
And if you never give birth, does that mean you're not living as a woman?
It's complete gobbledygook, as soon as you scratch the surface.