The most famous forms of Holocaust denial and revisionism tend to focus on Jews, casting doubt, for example, on how many were exterminated in the camps. But denying the impact the Nazis had on the other groups they targeted, including queer and trans people, disabled people and Romani people, is still Holocaust denial. Maybe someone should tell J.K. Rowling.
Naturally when people called her out for being wrong she quickly set up a strawman to keep herself from having to admit any ignorance or fault. What a stupid hill she has chosen to die on, she could have been universally beloved if she just kept her shitty views to herself.