There's no such thing as "phenotypic sex".
Yes, there is. Please study biology. You do not even have the basics down if you're using normative language in the context of mutations or chromosomes. There is almost no biologist, atheist, Christian, woke or not, that agrees with you. Though, you've already stated that you don't care what scientists think, even though you are trying to use their classification systems (species, etc).
it's the belief that humans can change sex via surgery and HRT.
You argued a fallacious point you leave wide open for them to criticize, I stepped in to helpfully correct you and you blew a fuse. You're obviously taking this pretty emotionally, and you're trying to use normative language to describe what something
is. While it does matter what someone's chromosomes are, in the specific instance of things like CAIS, their body is otherwise massively feminized. If you're going to use arguments, CORRECT ARGUMENTS, on why trannies should be sex-segregated from sports teams due to differences in actual physical bodies, then you must go and argue that CAIS individuals should be chromosomally sex-segregated in sports teams. By your logic, CAIS XY individuals should play football with the boys and ONLY with the boys. After all, there's only chromosomal sex, right? Except they don't have the bodies of men, they have the bodies of women.
It doesn't matter if they are an "aberration" or not (whatever that means; biologists use no such term outside of the third reich), nature doesn't care about origin, it just exists in the moment.
You sound like a troon, come to think of it. Are you?
You just sound like a 17 year old that has not even taken an undergraduate biology class and spitballs ideas he read in a Twitter thread. The fact that you didn't even have the curiosity to google "phenotypic sex" to supplement your lack of understanding. Biologists do not use one hard and fast rule to classify all organisms like this because biology is
messy. I don't care what the overall argument of the thread is--this particular point is wrong.
In everything you respond with, you seem completely unable to understand that nature is not teleological. You keep harping about mutations, but that isn't really relevant because you're classifying people in an asinine way--simply, insisting autistically that CAIS individuals are men despite having (mostly) the brains and body of women, but unable to handle nuance and complexity and you just stamp your feet and say that chromosomal XX/XY is all that matters. Despite having a very freshmen understanding of biology, clearly you've never studied it in an academic context ever, and you're going by high school-level knowledge which you overestimate and seem to think is far more exhaustive than it actually is.