I think a lot of people (mostly those who are leaving comments on the site) must have misread this item. The author says that you have to be sterilized before you have a "sex-change" surgery, not that you have to be sterilized before you can change your documents or whatever.
So...if this is true, does it mean that in order for a gal to have vaginoplasty, she first has to have a separate orchie surgery before she can get approval for vaginoplasty? Why not do it all at once? And what's the deal with the guys? I suppose it would depend on the definitions--of both sterilization and sex-change surgery (indelicately put, I thought).
I'm wondering if the person who wrote this piece simply made a mistake and meant that you must be sterilized before you can have your documents changed.
ETA: Or maybe the author just meant that sterilization has to be part of the surgery? Either way, the piece needs to be revised for clarity.