Sexual biology is much more interesting though when you learn more about it. Some people can live their whole lives happily as the sex they were assigned at birth without ever knowing that they would be classified as the opposite sex if their chromosomes were inspected. Other people are born with more obvious differences in sexual development and may be neither male nor female. And some people are painfully aware of the incongruence between the sex they are assigned at birth and their gender identity.
You are using people’s medical conditions to destabilise the well established definition of the sec categories here, for your own needs.
This is offensive, please stop. People with differences of sex development have asked people to stop this.
If you knew anything about differences in sex development you would be aware that almost 100% of them are reliably sorted into either male or female categories. Their conditions are dependent on their sex. In this way, they actually fully support the concept that sex is binary. To prove your point requires a incredibly rare condition involving mosiachism.
People we differences in sex development may be trans in the expected proportion as the general population. But apart from that Trans people are not connected to people with differences in sex development.
If you read this from a blog post on American Scientist, I would broaden your reading list considerably.
I would suggest you stop spreading misinformation over the internet. On Mumsnet.
And I would think your low bar of people not accurately identifying a transitioned male is misguided at best. Females are very good at not being distracted by makeup and hair and identify sex from other cues, gait, hands, feet, skeleton proportions, facial proportion (if not modified by extreme surgery) and voice are just a few.
Your use of ‘discomfit’ in single sex spaces is laughable in its attempt to minimise. It is rare that a female (without taking testosterone) will be mistaken for a male in the toilet by another female. They might for a brief moment; until they speak to the person. There are few examples of it genuinely happening and not the over exaggerated frequency activists use.