Evolution,  no longer male or female, we are "X".  Is "X" a cross between what once was a Male or Female?  Is the "X" your right not to have to say your Male or Female, that is an invasion of privacy.  When you need to use the medical facilities, are there "X" Doctors to treat you or are they "Y" Doctors?  The paperwork that must be signed, is it signed with an "X", since your name is personal information.  So my final thought is that I will need to study the "XYZ" of this to see if the "X" might be personal information and there fore they cannot ask you if you are an "X".