To defend joss again (I swear I’m not joss’s sock puppet) I think they’re trying to point out that Sharron has a natural biological advantage of height over joss that she can’t have worked for but was born with, therefore if a transwoman was taller/stronger/faster than a woman, that’s just the luck of the draw so it’s fine for transwomen to compete with women. Ignoring as always, averages between men and women and more importantly, that men aren’t women and women aren’t men but are biologically different.
I can’t believe joss (or anyone) would actually be saying or believe that training makes you taller.