The app for independent voices
Some good points -- old Freddie is definitely rather clueless about the difference between sex and gender, and rather too gutless to consider any corrections. Though one might say the same about too many feminists.
Maybe you should all "stop writing about the trans debate if (you don't) understand what (others) are talking about". Apropos of which you might consider Merriam-Webster's Usage Guide on "gender":
MW: "Among those who study gender and sexuality, a clear delineation between sex and gender is typically prescribed, with sex as the preferred term for biological forms, and gender limited to its meanings involving behavioral, cultural, and psychological traits. In this dichotomy, the terms male and female relate only to biological forms (sex), while the terms masculine/masculinity, feminine/femininity, woman/girl, and man/boy relate only to psychological and sociocultural traits (gender)."
You clearly think "woman" is based on sex -- "adult human female" -- whereas Freddie and his ilk see it as a gender -- anyone who exhibits any sort of a passing resemblance to typical "adult human females".
The whole transgender clusterfuck often seems, at worst, no more than a Lilliputian civil war over egg (ova) cracking protocols, over transwomen's envy and women's vanity contending for "the golden apple -- for the fairest".