I agree with what space_kat said, that it is a good thing to hear from someone who made the wrong decision. I started to write something about how huge a deal transitioning was, and how it has to be made with care, and realized that most of you know that far better than I do. I'll try to say what I'm thinking without making a fool of myself.
As someone about to open the door on my transition (knock on wood) I made a point of going out to look for stories like this. I have doubts, as I'm sure everyone does, and I think it can be a very good thing to see the consequences of inadequate screening/therapy/whatever. That being said, most of what I found is like this video: a piece that seems to be aimed at a crowd that wants to hear that a mtf transsexual can never be a real man, or never be a real woman, instead of holding this man up as an example of why there should be many procedures, double-checking and safeguards in place. Many accounts are aimed at religious groups, which can make things even more hurtful.
This is probably opening up a different can of worms, but things like this are why I feel uncomfortable reading about programs starting children on hormones at a very young age (pre-teens). I would have benefited immensely, as I'm sure many of you would have, but I think the decision is so critical that I'm not sure a child can really be trusted to make it. I realize some of the treatments aren't permanent, they simply postpone puberty and give the person more time to decide, but in any case, I think it's a valid comparison to the video.
From a purely emotional perspective, seeing someone transition for the wrong reasons and be so passable/beautiful while many people with the best of reasons are never so lucky makes my heart ache at unfairness of it all.
Sorry for the long post, I post often, so I tend to be verbose when I do.