Laura : Oh, I wasn't actually saying it wouldn't happen. I was saying it won't happen SOON. If it's pushing five years since this idea was out there, clearly progress is slow and application to trans women even slower. Personally, I decided I wanted a vagina immediately rather than wait for this to develop enough to be of use to me, and that was three years ago now.
Others with more medical expertise have addressed the fact that adapting it to trans women in specific would require an additional level of complication, and it's not even beyond the tentative experimental stage with cis girls, so my feeling is that it'll be quite a few more years before we see this technique available to us (if it is at all, since Jenny is now suggesting it might not work after all).
Gay marriage is actually a good comparison to me, because I also would not have suggested that someone who had the right to marry 10 years ago now in Massachusetts wait years and years to find out whether it'd be accepted nationwide; there's an opportunity cost to waiting, too. It means going without "good enough" for indefinite years waiting for "perfect." In both situations, people will judge the risk/benefit ratio differently, but in both cases it would have been foolish to assume that the "perfect" option would be available in a year or two.