Yeah, a truly idiotic argument from our Louise.
Those who have been successful in sports have very frequently exploited a natural advantage like more fast-twitch muscle fibres, a greater reach, height, balance and, I suppose, large feet.
However even female athletes who are blessed with such physical advantages still have to work damn hard to become part of the elite.
Trans-women who were male athletes and now insist on being allowed participate in womens' sport transfer many physical advantages. That is a simple fact.
What Louise forgets is that if Michael Phelps decided he was a woman and wanted to compete as a woman she would be bringing those large feet with her. She can't leave them behind.
A word as well about the SA athlete Castor Semenya, a woman treated abdominally by her sport's governing body, essentially forced to chemically alter her natural hormone levels in order to compete. Disgraceful. She was born that way, and has (had) a natural advantage by dint of who she was, not by cheating or declaring herself something she patently wasn't.