Earlier quoted context omitted.
> You're a man. I'm not sure you're in the best position to see. I found the sexism right there. ("Is man must not be able to see or have valid experiences.")
Well, of course a man can have valid experiences. A man can't have the experience of being a woman, though, pretty much by definition. That's not sexism, the claim that a man can't experience life as a woman would. In fact, that seems like a really uncontroversial statement.
I thought it was very interesting, because she essentially "served as her own control." The only thing that changed in the situation was how people perceived her gender - the ideas, feelings and performance were from the exact same person. It certainly made me reflect more on unconscious biases I might have.