It was a theory that started long ago, sometime around 2000-2008. The theory is that most famous sex idols were born male, underwent surgery to become female, so that hollywood could do it's thing in promoting women over men.
Men make more money but in fewer number, where any half-decent looking woman can star in a myriad of roles, from pop star to yacht girl, and thus, women are more lucrative than men.
It's the reverse idea of what happens in india, where they drown female babies because they're worth less than men. Similar thing in china with the one baby policy.
It doubles nowadays as a humiliation ritual because most female sex idols are male; Lady gaga, miley cyrus (body double after OG was murdered) taylor swift, amouranth (titty streamer), and many more.
It's theorised that the uptick in trans rights, trans awareness and trans surgery is because the Dr's who performed this surgery on the hollywood whores, trained out others or opened their practice to the slightly-less-rich, then to anyone who wanted it. We saw this exact same method happen in the 90s with cosmetic surgery; the more popular nip/tucks and face lifts became, the more standard the procedure and voila, a mass market of plastic surgeons making billions.