Sorry, let me explain.
So Margaret Atwood is the same age as Germaine Greer, and I think it's entirely possible that neither of them will live long enough to see this period relegated to a "what the fuck were people thinking?" episode in history. (I'm convinced, however, that JK Rowling will be entirely vindicated in her lifetime.)
Margaret Atwood said something that could have been interpreted as mildly gender critical and was immediately piled on by trans activists so she recanted and went TWAW.
She doesn't believe it. There's no way she believes it. She knows full well what a woman is and why a trans woman isn't one. But I think she cares about her legacy, she doesn't want to put her head above the parapet and have this fight at her age, and she would like to die a beloved and very successful writer, not be cancelled and go to her grave a pariah.
Whereas Germaine Greer is just like, I don't give a shit, I'm an old woman, what are you doing to do to me? You don't scare me.
Maybe, as I said before, Germaine Greer wouldn't have been so outspoken if she was currently making loads of money from a high profile commercially successful adaptation of her books. She doesn't have nearly so much to lose.
But I think Margaret Atwood cares too much about her legacy and doesn't want people to hate her, so she's chosen the path of least resistance.