She denies the existence of a gender spectrum. She says that Sex and Gender are the same thing. In the video he reads her tweets, which I don't think I have ever read. She has been very clear about her position. In the tweet she seems to be claiming that her insistence that sex (chromosomes and biological equipment) is the same thing as gender has caused her to be discriminated against when her position denies the identities of many. Her position is essentially a TERF (Trans-Exclusionary Radical Feminist) position which is generally when a feminist denies transgender identity.