Emma Watson has very carefully managed the cognitive dissonance of accepting being a representative for female humans and issues specific to being born with female biology while still saying and behaving in ways that genuflects to the political lobby.
It would not stand up to conversation any more than Radtwit's comments would.
Which babies get buried alive at birth, or abandoned, or disproportionately aborted? How does anyone know which babies to do this to and why do they do it?
Which small children get married off and sustain terrible injuries or die in childbirth with a body not ready to do it? How does anyone know which children to do this to, and why do they do it?
Which children get their genitals mutilated and stitched up to prevent their sexual pleasure and control their behaviour? How does anyone know which children to do this to, and why do they do it?
Who freezes in period huts? How does anyone know who has to do this and who doesn't, and why do they have to do it?
Who's ability to work and avoid rape is reliant on access to single sex toilets? How does anyone know who needs these? Why do they have to have them?
Now try and get answers to any of that without some very grim, racist colonialism about the superiority of the western world. And even in the western world, who is entitled to privacy, dignity, a lived experience, freedom from cultural and derogatory appropriation, their own language and choice of self expression, valued choices and protected identity - and who doesn't? How do we tell those people apart? Why is the one group subordinate to the other?
Being born with female biology is relentlessly attached to disadvantage. You can only lie about it, threaten people for talking about it and shame them for acknowledging that they see it. You cannot hide it.