I think that's naive to the inadequacy of language for other people's sex and gender identities. It may be "every little thing" to you. For others it's an inability to articulate and a denial of their experience or existence.
What nonsense. There is already a term for "born female, always been female and living as female". It's female. It doesn't need another label. We don't need to label it again.
There are also terms that describe other gender identities so how, exactly, is describing a "female born female etc" simply as female denying the existence of others?
I am not "cis female" I am female. Bog standard, common-or-garden female. Other types of female can call themselves whatever they wish.