Karen, I can honestly say that I don't agree with even one point in your comment. I'm really struggling to understand how anyone could even feel the way you say you do. It would seem to me that any post op that would feel the way you do and thus divulge so as not to be petty, passive-agressive, etc would almost have to consider herself less than, other than, or different than simply female.
If one is preop, it's absolutely imperative that they divulge before they even agree to go out on a date with a man. But, in my opinion, for a post op, there's no reason to at all unless, or until, there is involvement over and above a few dates.