Are the far right Christians here in the U.S. just upset they're losing power

[Gemini]

If your own sex isn't an objective fact then pretty much everything else is up for grabs. 

Here's the problem I have: you're obviously intelligent enough to understand the counter-argument to that claim.

Which is that I, as a transgender woman, have both a male genotype and a male phenotype. These are objective facts. Notwithstanding this, there are other facts--pertaining to what is between my ears--that make me a transgender woman. 

Disagree that sexual ambiguity can be manifested through neural structure (just as it can through other physical structures) if you want, but don't pretend that the current controversy over transgender people has anything to do with sex being "up for grabs." That's intellectually disingenuous.