FFS, I certainly was not referring to gynecomastia. In fact intersex individuals DO exist. Yes, this is a rare anomaly. I certainly did NOT suggest that there is a spectrum of sexes.
Differences of sex development (DSD) is a group of conditions in which there is a discrepancy between the external (outside) genitals (penis, scrotum, vulva, labia) and the internal (inside) genitals (testes,
medlineplus.gov
en.m.wikipedia.org
People who have intersex conditions are NOT in-between sexes. They are all still either male or female.
Don't be misled by poor terminology. "Intersex" makes it sound like these are people who are somehow both sexes, but they aren't. They have ambiguous development of their reproductive organs - something went wonky in development. But none of them is actually both sexes, and none of them are an "in between" sex.
Honestly, read your own links! The wikipedia page lists the various DSDs colloquially called intersex, as well as specifying WHICH SEX is affected by them. The few that say "none" refer to conditions that can affect both males and females, but that in no way at all means those individuals are neither male nor female, nor does it mean they are both.
My goddaughter has a DSD. I know several people with various DSDs. To imply that they're "in between" or some other sex is generally viewed as an insult by them. These are real medical conditions that have very real impacts on people's lives. The politicization of their medical conditions by the transgender activists is really not okay.
Their conditions get used in bad faith to push an entirely different issue, and I find it despicable. The argument generally goes "(1) Well, you can't say male and female are completely different categories, because intersex people exist. (2) The existence of intersex people demonstrates that sex isn't binary, it's a spectrum. (3) Because sex is a spectrum, nobody can actually know for sure who is male and who is female and who is in-between. (4) Since nobody can tell what sex anyone is, we have to rely on their gender identity to prove who they really are. (5) Therefore transwomen are literal women and transmen are literal men"
The problem is that (1) is false. People with DSDs certainly exist, but their condition does NOT make them "in between" the two sexes of male and female, no more so than the existence of people who congenitally lack and arm makes humans have a "spectrum" of arm numbers as a definitive approach. It just means that they have a medical condition that has caused their reproductive anatomy to develop in an unusual or atypical fashion, sometimes producing visually ambiguous genitalia. But they are still, in actuality, either male or female.
Because (1) is false, and relies on the term "intersex" providing a false implication, everything else after that is also false. Because people with DSDs are NOT "in between", it does NOT follow that sex isn't binary - sex is very much binary. There are only two gametes, there are only two sexes. That some members of one sex or the other are atypical in their development does not imply that there are more than two sexes, or that sexes are a spectrum... there are still only two gametes, and there are still only two sexes.
Sex isn't a spectrum, sex is a binary. The entire evolutionary result of sex is reproduction, and reproduction in mammals ABSOLUTELY cannot happen without one of each sex being involved. Reproduction ABSOLUTELY requires two - and only two - sexes among mammals. And while some few people are androgynous in appearance, this is quite rare, and humans are extremely good at determining the sex of other adult humans. We're very close to 100% accurate, even without social cues like hairstyle and clothing. Our faces alone are dimorphic enough that we can determine the sex of an un-augmented person from their faces with so close to 100% accuracy that it's really quite amazing.
The entire basis of this current discussion about people with DSDs is here because their medical conditions are being used to push a false narrative that a person's subjective view of themselves with respect to social roles is somehow more "reliable" than their actual sex.