I hope you won't judge me for appearing to be insensitive to the feelings of others but this world, where nobody judges or genders you based on subliminal body language, (voice, appearance, mannerisms etc.) just simply does not exist. As has been admitted by even the most experienced among us, if someone "appears" male, (be it voice, body-build, mannerisms, whatever), they will automatically be "gendered" male and treated accordingly.
In some "enlightened" situations, (college campuses for example). or where there are societally imposed sanctions for not responding "appropriately" to the "presented" gender, those who do not "pass" or "present" convincingly might be treated, addressed and/or related to in a manner consistent with the gender they are presenting as, but....in truth, just how authentic is that?
What is being addressed here, IMO is just how compulsive these GD feelings can be that even knowing how slim the chances for a successful transition might be, people are willing to accept that "half a loaf" rather than no "loaf" at all.
Unfortunately. in my mind at least, there are many who might expect that this imposed/forced acceptance by others will be sufficient to sustain them only to find that in the end they will have to find other ways to fill that need for human warmth and intimacy.