Apart from anything else, RMW not only makes no secret of the fact that he's male, he utilises it.
His entire persona is 'trans barrister'.
That commenter is saying we all know Robin is a man, but because he says he isn't, that's the entire point. And women should protect him actually during the act of violating their boundaries??
You've got a snort at the willingness to write that kind of shit down.