TBH I don't think you know what you are saying, because you don't really believe it..
You've spoken about multiple 'genders' (in relation to indigenous people), but have approvingly stated that the left have never argued there is 'more than one sex'. I admit I had assumed you had mistyped and meant there was never an argument that there were more than two sexes, but maybe you know something we don't.
On 'rigid gender roles' I've reread you're original post mentioning them and I'll confess that it is actually so incoherent it's difficult to see who you are including in this. However you have argued that calling out the stereotypical performance of gender of transpeople is in fact just some kind of weird trick to hide transphobia - all while talking about men dressing as women.
You've said "I have never argued that transgender men are not still men." (clarifying later that you mean transwomen by transgender men), yet when @Boiledbeetle said "You can't do anything about any of the things you listed if your definition of women includes men." your response was "it Doesn’t include men. It includes trans people."
Now you say . "If someone is predatory and is
presenting completely as a woman, how do you imagine preventing them from going to women’s toilets? Do you imagine guard at every toilet checking peoples genitalia? Can’t really stop that anyways. The third spaces would be mainly for the protection for transgender people." Yesterday you said "We don’t need mixed sex toilets (which I’m against)"
Finally we find that the third sex, which has now become a category, is in fact for " all the other letters of the LGBTQI+ acronym". All the others besides whom? Is every 'queer' person now third sex? But it's OK because it's just for sports and 'equal opportunity schemes' so all the actually female non-binary, asexual, 'intersex', etc, etc people can fight it out with the male ones, and this will apparently be brilliant for women's rights.
As I said, all over the place