This.
And to answer my own rhetorical question about why they don't come up with new words for themselves, the reason why is this.
If males who identify as [whatever it is trans women believe they are identifying as] called themselves "borkles", rather than "women", they would not be able to use women's spaces, because women's spaces are for women and not for borkles.
There are no toilets, prisons or sporting categories for borkles, only for men and women, so they would have to campaign for these things to be created.
And if borkles who are exclusively sexually attracted to women called themselves "borklespians", rather than "lesbians", they would not be able to argue that lesbians should date them, because lesbians are attracted to other lesbians and bisexual women, not borklespians.
That's why they don't make up their own words.