Hmmm... well this is a pickle isn't it? I pass 100% of the time. Hell, I skate in clothing so tight that there is *nothing* left to the imagination and still, at least three or four times a year, I have the conversation where someone I've known for years had no freaking clue. It's a thing.
Do we put too much emphasis on it? I don't know. From the perspective of someone who can have the conversation and then go right back to having that person treat me like they always have, I can say that it's a salve for my nerves like no other to just be seen as 'one of the girls' without distraction. I have no idea what a world where non-passable MtF's fully integrated in society would be like. I myself find a non-passing MtF kinda disquieting, despite me knowing exactly what the deal is and having no actual bias against them. There's just an 'otherness' quality about them which can and does disrupt the flow of an all-female space. It's... hard to deal with somehow.
Does the trans community put too much emphasis on passable trans women? Mayhaps. I think that there's a cause and effect here that we haven't talked about much. Do passable MtFs (and FtMs for that matter) rise in our political organizations because they're passable or does their passability and thus, increased confidence in society at large give them advantages in confidence and self-worth which translate to better success? Really, it's a damned hard question to answer and a passable person like myself probably doesn't have anything valuable to say in the conversation other than experiences, thoughts, and observations. Conclusions, I will leave to those who don't have an entrenched privilege that clouds their judgement.
I will say this, however. I was having a conversation with my bestie (a GG) today about the privilege of being pretty, white, and young. We both acknowledged that it screws peeps who aren't gifted by the gods to happen to be what society deems valuable in a woman at the current point in time. Her comment, however, really caught me off guard: "Yeah, I wouldn't turn it down. I mean, really, would you change it for anything?"
No. I wouldn't. It sucks, but that's what it is. Privilege. Pure and simple. Society will always privilege some above others. As Seriph said earlier, that's the nature of humanity. I can point out how awesome non-passable trans women can be by pointing to paragons of awesomeness but in the same way that large-bodied GGs can be outstanding in all other aspects of their life, general attractiveness can and will be a factor in their lives. We're changing, very, very slowly as a society but I have no idea how long it will be before there will be a absence of a category that no one would trade out of for anything.