Your opinion is no surprise about just accepting it and getting on with your life ie; pretending to be something you're not.
But changing your sex *is* pretending to be something you're not. He was born a male and should accept who he is. Trying to be female won't make a difference for him, apart from fufill his own selfish needs. Personally I don't identify with a lot of males myself, but I feel no need to change sex because of that.
The same thing could be said for a lot of things - AS for example. A lot of us have it, but live with it - trying to fight it or change it won't do anything.
There always have been people identifying with the other sex more than their own gender.
Now there is the surgical skill and hormone knowledge to come a long way in making that identification more real.
Can't see what the problem is.
It's not like GA is going for the appearance of the most stunning female model in the world. Wanting all the attention in the world. She just wants a female body because she identifies herself with females.
You don't identify with a lot of males, so be it. You don't identify that strong with females that you think you should be one either. You find your own way and are ok with that.
Yes, it must be extremely hard for Ren. Will be hard for GA too, but, GA is the one in control here. And Ren isn't. That is theirs to deal with. And yes, it would probably have been convenient had GA realised sooner. But how is hindsight wisdom going to help. Doesn't change a thing in the present.