Something is not quite right in these claims.
These people have not gone back. They had their male genitals removed, but subsequently, chose to live as men. This isn't reverting. That is lifestyle choice.
Speaking for myself, I would love to have corrective surgery on my ugly bit. Once I have done that, I will live as I choose. I don't see why I should feel compelled to live according to someone's estimation of how I should live. It isn't anyone's place to tell me that I can't live with my wife, or that I must wear a dress.
I can't remember the last time my wife wore a dress. I know that she has never, in her life, chosen to wear a dress. Always, as is appropriate to the situation. I have a photograph of her, at about 12 or so, going to her first communion, in a white dress, with a veil, (watched over by her formiddable grandmother!!). She looks like an awkward boy in a dress.
The claim that, after surgical correction of this fault, I or anyone else must live according to a set of notions of how women should live is sexist and frankly demeaning.
The issue with these people is their disatisfaction in the assigned role. Their problem is their failure to embrace the opportunities that modern surgey has provided, to see beyond the binary gender.