Outlaws

Some people believe that being transgender means that you are transitioning from one sex/gender to another when instead, you are more liberating your expression and identity from the constraints of birth sex. In other words you aren't going from a biological male to a female but instead rejecting the idea that your birth sex automatically determines who you are. 

When people transitioned in the past there was no middle ground and male to female transsexuals were correct to live as much as possible in stealth to avoid rejection and prejudice. 

Here I will also add that being a man and woman have traditionally been loaded with all kinds of social obligation and expectations which have little to nothing to do with their biology. 

Today, transgender youth are more likely to live somewhere in between the old binary model because both men and women are more free to explore life outside of what were very strict gender roles. This is why they have adopted more terms for how they identify. 

Binary transsexuals who felt they had been subjected to a complete psycho-sexual inversion still very much exist of course and are part of the broad spectrum of humanity and always will be. 

So in a sense being a transgender person makes you a gender outlaw (as Kate Bornstein famously coined) where you have a public and transparent identity which necessarily exists outside the constraints of birth sex and the rules which used to govern it.