Because she's obviously targeting trans women and not older cis women.
This article mostly seems like a "fun fact: trans women aren't the only ones who don't menstruate."
>>12359558Most of them don't seem to, and at no point is the screencap trying to imply this. It simply says that it also excludes trans men (assigned female at birth) because many of those who are under hormonal treatment / have gone through SRS don't menstruate either, despite being (most of the time) XX.