Male and female are two clear biological categories everyone fits into
Piers Morgan said:
“They actually do, because the vast majority of human beings fit into the category of male or female.”
It is true that most people are unambiguously male or female in most biological respects, so the claim sounds like a straightforward statement of observable fact that only ideologues would dispute.
Most people do fit comfortably into one of two broad categories, and that part is true. But biological sex is not one thing: it is chromosomes, hormones, gonads, internal anatomy, and external anatomy, and those axes do not always point the same way. Around 1.7 percent of people are born with some form of intersex variation, which means millions of people who do not fit the binary neatly, and that is before we get to the question of how puberty, medical history, and hormone levels interact with athletic physiology. The relevant question for sport policy is not whether most people fit the binary, but what fair eligibility looks like for the people who do not, and that is a medical and policy question that cannot be answered by pointing to how the majority are made.
What I said at the time:
“Because not everybody fits into a very simple male-female category, and that's why we're having discussions like this.”
Intersex people and people with differences of sex development, whose existence is erased when the binary is presented as universal, and who then have no recognised place in policy discussions about sport.