“ Because they are the real deal but they are rarest (less than 1 in a million)”
Nope. Even more common than Trans people, and by a long way.
Post-operative Trans people amount to approximately 1 person in 3000 in the US.
Sex Chromosome Abnormalities Found Among 34,910 Newborn Children: Results From a 13-Year Incidence Study in Århus, Denmark J.Nielsen and M.Wohlert in Birth Defects: Original Article Series, Volume 26, Number 4, pages 209–223
Chromosome examination was made of 88% (34,910) of all 39,618 live- born children at the Maternity Hospital in Århus during a 13-year period from 1969 to 1974 (4 years, 5 months) and from 1980 to 1988 (8 years, 7 months).
This paper deals only with the sex chromosome abnormalities. Autosomal abnormalities will be presented elsewhere.
Klinefelter (XXY) syndrome was found in 1 per 596 boys, XYY in 1 per 894 boys, triple X in 1 per 1002 girls, and Turner syndrome in 1 per 2130 girls. Other sex chromosome aberrations were found in 1 per 11,637 children. The total incidence of sex chromosome abnormalities was 1 per 448 children or 2.23 per 1000.
About 1 in 300 men are not 46,XY. About 1 in 600 women are not 46,XX. So the “real deal” as you put it is about 1 in 450.
The idea that Intersex people are “less than one in a million” may be a product of lack of knowledge, but it may also be a problem of ideology — that in order to maintain the fiction of a strict sex binary, it is necessary to pretend that they are so astoundingly rare they are negligible.
Not over half a million in the USA alone.
If you include autosomal syndromes, even the really minor ones, it’s not 1 in 450, it’s 1 in 60. But that’s not a useful figure as so many are really minor and require lab tests to detect. “One in a few hundred” is more useful for practical purposes, infants with ambiguous genitalia or other obvious sequellae.
