It is an incredible step forward, but...
(1) We have no idea what the BBC or Upton mean by "identifies as"... "claims to be but objectively isn't" seems to be the real meaning, so why not actually spell it out in the most honest and unbiased way possible - "a man - a biological male - who claims to be a woman despite objectively not being one, and who claims to be female despite being a doctor who must know that he is male".
(2) We have no idea what is in Uptons head, just that he claims to identify as something that he is not and cannot be. We have no idea whether he believes his claim, or whether he knows he is an autogynephile, predator or transvestic fetishist, and the identity claim is nothing more than dishonest cover.