There will always be moaners, for many reasons. But someone can post on the net. any claim they choose.
Though I haven't, and probably won't, look at the site, i wonder how many of those may have had their change of thought at an early stage. We had this quite recently, so youngster, about 17, living as female since 14 I think. Had anti-androgens for a few months, changed their mind. Then made a big hoohaa in the tabloid press, because they were paid for the story.
The truth is, the process is remarkable successful compared to other medical procedures.
As others said, and probably will, my regret is not doing so when I had the chances. I know so much more now, but one thing I wish I had known when younger is, the longer you put it off, the harder it gets.
Need - Opportunity, Just do it.