We needed proof that no man can truly become a woman?
It should be clear to anyone with some basic knowledge of biology and human anatomy.
As long as science can't grow new hands or eyes for those who have lost body parts, they can't create female sex organs for a man, or vice versa.
It is baffling that some people don't seem to grasp this simple fact. We accept that dentists can only give us fillings and fake teeth, but not regrow our real teeth, but science is supposedly far enough advanced to make people change sex?
Even without any knowledge of biology, one should be able to deduce from all the other things science cannot do that a sex change brought about by modern medicine it is rather unlikely.
"Gender dysphoria" is about not liking how the biological sex you are is treated in modern society.
Sex dysphoria, a term rarely used, would be about not feeling comfortable in your own body.
Common sense says that a very poor copy of what you allegedly want is not likely to make you happy.
Most young girls who want a pony would probably not be very happy to be given a bike and be told that they can go places with that, too.
They might be happier with a rabbit, seeing as it is four-legged and furry and they can pet it, which is at least three things a horse is instead of just one.
However, I don't think gender surgery really concerns itself with what people want to achieve by getting a poor copy of the other sex's body. So it is unlikely it will make anyone happy.