I'm already chastising on vocabulary. He recognizes the existence of trans people, a recognition which by definition carves out the difference between "sex" and "gender." The usage gets muddy though. I am going to presume, seeing as he actively pointed it out in the case of trans men, he realizes that most trans women(any?) are not fertile in the specific way that a female can be. The possibility of becoming gravid, and the likelihood of being smaller in raw mass than males due to sexual dimorphism are indeed characteristically female traits. Given the goal of equal opportunity and development, they along with base differences in hormonal temperament(which actually can be treated these days), are some of the last remaining "hard" differences between males and females, right? I just have to read his consecutive posts as being sloppy with 2019 vocabulary(give the discussion at hand) instead of wildly internally inconsistent.