I just want to be clear (not to this person but to anyone reading) that they are wrong.
They are assuming what they will read as evidence in books and literature. It's frankly kind of astonishing that I can say "I'm an expert, I'm a biologist, and trans women are women with tons of biological evidence for that validity" and then have this person say "AH but the SCIENCE says I'm right, you just have FEELINGS!"
To be clear, the science says I'm right, the feelings are irrelevant. Toodles!