Even sexism affects transgender male characters precisely because of this:
Honestly, i hope that everyone who still uses the headcanon of Sir Crocodile being a trans man solely to create perverse images of a pregnant man submissive to stereotypes of women being treated solely as mothers, goes to hell
"Oh, but what's the problem with pregnant or effeminate trans men?"
Zero, the problem is when you define the character solely by that, Sir Crocodile has many characteristics to his character, he has many actions, and most importantly, he is a villain, which many forget, using a character who is literally a villain in a headcanon where he has a biological son and is automatically a sweetheart is ignoring the very basis of the character, Sir Crocodile is clearly a pure reference to the mafia, but rarely do people who use the term "crocodile" use this fact only to make the character extremely effeminate and simply ignore the fact that he is a trans man and not a cis woman
I'll just repeat one more time, the term "Crocomom" is a transphobic term for a transgender headcanon character