He said that in the context of the physicality of someone who was fully grown, recently transitioned and was actually brutalizing women in MMA fights.
This person was able to brutalize women because of attitudes like yours, where you are too afraid of using the incorrect pronoun even in the context of making a point about dangerous differences in physicality.
This person beat a woman until her skull cracked and you are hung up on someone saying she has the physiology of a man. What do you think sets the acceptance of transgender people back more?