Usually it doesn't matter whether a person is cisgender or transgender except where doctors are involved, but because gender critical people spend so much time differentiating between women who are or are not transgender, it's a useful prefix.
Oh dear. You seem to have entirely overlooked the many many female voices who have said again and again, in here and many other virtual and physical places, in courts of law, bravely in public spaces, through any media that do not silence them, in the very book whose launch led to this thread, that it does matter to us.
Why is that @DadJoke ? Do our voices not matter? Do we not matter, when weighed against the needs of a small group of males who believe their external understanding of womanhood has more validity and understanding than that of those who have lived it every day of our lives?
Indeed, when you assign female only spaces into those for cisgender women only (in theory, since you believe your own failure to imagine such things could be justified is argument enough to deny them in practice) and those for women of both sexes, what does that mean for people like me, who have a female body, no dysphoria, but unlike cis women (meaning here of course only those who actively and informedly identify as cis, not those who have the cis label arbitrarily applied to them by a genderists' need to impose their own assumptions about identity ) don't identify as having a "woman's mind"?
Where do we into your neat scheme?
What justifies your imposing upon us an obligation to share our formerly and intentionally single sex female spaces, identities, rights, protections and opportunities with people with whom.we share neither body sex nor mental gender?