I think you should visit India which if I recall right recognizes 4 genders. (That is officially!). They all have their position in the society.
But the issue here with the idea of "Female Man" or "Male Female". Is language cultural. We have certain definitions that can be considered absolute, on which we construct the ideas of other words and with that we can understand concepts and meanings of words.
Issue here is that genetically "Male" and "Female" are quite absolute. It can be defined at the most meta-level of human biology, in the DNA. This is a fact we can not escape, unless we come up with new words for "male" and "female".
It is very much like "positive" and "negative", + and -, They are absolute and we cant escape their meaning without creating a paradox of language.
For example:
If there can be a "male female". Then what is the definition - meta - of "male". Unless we have a concept for this we can not define "male female". And what is female then? How can male be female, while still being male?
If you been reading even a bit about language philosophy you can understand how the infinity loop, paradox, begins. If X is Y, then Y is X, X = X, Y = Y, Y = X... How is it possible to create understandable concept that we can use as language references.
Ofc this is just cultural concept here.(Culture being philosophical jargon that holds in all aspects of society, language, culture, history, words, religion, concepts... etc...)
I will sadly not dwell in to the social aspects of this issue. Mainly because I believe that there is no male or female, but human. We are all humans and that should be only defining feature that we have!
On personal note: I believe people in general are shit (including me), this society is shit, this world is shit. The humanity is stupid and primitive. So I don't believe there will be a huge cultural revolution over a VERY SMALL minority. I wish there could, but it is just Utophistic thinking.
"I wish for the humanity to be fixed, for the ground to be healed, for the sky to be mended and that life wouldn't hurt. But this is only a dream and should remain as such, dreams are as important as the reality. They both need each other, both must exist."
The last paragraph from the last letter a local philosopher wrote before sleeping away. I respected him dearly. If we all could be as wise as he was... But we can't.