Cis is not a word I had ever heard of until some thread in the last week. It's not a word I shall ever be using. For this post I'll refer to XX women and XY men just for clarity.
Cisgender may also be defined as those who have "a gender identity or perform a gender role society considers appropriate for one's sex"
This gender role society considers appropriate for one's sex bit bemuses me. So Cisgenders could be women with XX chromosomes who behave like women with XX chromosomes - which given the millions of different roles women with XX chromosomes perform, and all our wonderful personalities, is pretty wide ranging.
Now, what gender role are XY trans males performing? Not XY male, they say, but not XX female either. No XX woman I know performs her gender role in the way that any XY trans male I've ever seen does - i.e. exaggerated movements, highly effected mannerisms, over-the-top dressing, overarching flamboyance etc. It's not how XX women behave.
Now, I fully see how someone might say they are perhaps overcompensating, not getting it quite right, and they even have training courses on "how to pass". But others merely love the dressing up. That's not what being an XX woman is about.
The thing I don't understand at all is - why do they try to pass as XX women anyway? If they are "women trapped in men's bodies", then surely such XX woman behaviour would come naturally to them? Once they begin the treatment, why do they need to be trained at all, if it's intrinsically who they believe they are?
Why do they try to perform the gender role society considers appropriate for other people's sex, and do it in such an OTT manner which does not achieve anything like the XX performance?
If they believe gender fluidity etc, why don't they just perform their own gender role, at the point they naturally are on the spectrum?