I think you make a very important point - MTFs NEVER pass. I think this is the root of much of their anger and violent acting-out, and their demands that everyone conform to the ever-evolving language demands. The only chance these deluded men have of living their fantasy of "passing" is to use the power of the state and the threat of physical violence to force the rest of us to treat them as the "laydees" they wish to be seen as.