A question for Galt: What if the sex change (put quotes around it if you like) were actually at the genetic level? The difference between men and women, fundamentally, is a Y chromosome. So...change it. Make someone biologically indistinguishable.
This would solve the definition of terms angle, as the gender change would be absolute and inarguable.
Does it still not count? Is gender something handed down by God, forever carved in stone...or do we, as our bioengineering skills continue to develop, get to make the determination at will at a level that nature itself would be unable to argue?