The video clip of him speaking on that page is infuriating. He believes that because he’s become weaker after transitioning, he is now the same as women and doesn’t have any advantage. He claims those who oppose him playing in women’s golf isn’t because of him having any advantage, it’s just because we “don’t like trans people”.
The cyclist Emily Bridges said something similar, insisting that he had become weaker after transitioning, without realising that he was still stronger than women and therefore had an unfair advantage.
Either they genuinely don’t recognise the advantage they still have, or they don’t want to believe it.
Renee Richards, a transwoman who played professional women’s tennis in the 70s, when he was in his early 40s, later came to realise that he had an advantage.
Richards has since expressed ambivalence about her legacy, and came to believe her past as a man provided her with advantages over her competitors, saying "Having lived for the past 30 years, I know if I'd had surgery at the age of 22, and then at 24 went on the tour, no genetic woman in the world would have been able to come close to me. And so I've reconsidered my opinion."
https://en.wikipedia.org/wiki/Ren%C3%A9e_Richards#Tennis_career_after_transitioning