She did say “don’t listen to me. Listen to the scientists”. So it would be reasonable for her to apply the same logic. But there is a lot of misrepresentation of scientific results going on, and AFAIK Greta isn’t a scientist or statistician herself and may be just accepting statements like “science shows trans people’s brains match their desired gender” without seeing what questions need to be asked to make sense of that.
she’s also, obviously, an idealist, which is not a bad thing, and a young, sheltered, privileged woman who doesn’t have a lot of experience of misogyny and how it operates. Like so many women including me, she’ll probably get a deeper understanding as life experience begins to outweigh patriarchal programming.