Maybe I am misunderstanding but I thought to say something is a truism means it is self evident. That surely means it is realistic. If all CDers came out then it would surely have an effect. It does not even need that. Prejudice works best when a minority can be dehumanised. When the minority has a face, be it Caitlyn Jenner or your best friend, then it is harder to discriminate.
If you are right, Reine, then there is no hope for CDers and it is probably best if they stop wanting acceptance and just accept that they are lost.
Did it really take 100% of women to start wearing pants to make it normal. I doubt 100% of women wear pants now. More likely it became acceptable long before the majority joined in.
Making something acceptable requires action and courage. Visibility is the key.
Personally I do not care if CDers come out or not. That is their problem. I am fed up of TS being told that they are letting the "transgender community" down by people who are happy to stay hidden. I know how tough it is to come out to everyone and live your life as a woman. I have done it.
By the way I think Paula Q has really nailed it on this thread.