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.
The main character is “half-blood” and his main sidekick is “muggle” herself, so I’d wager not so glorified. Of course, there’s an undercurrent of racism there, because the bloodlines really really matter. But this is fantasy fiction so I don’t how much of a sin it is. Bloodlines mattered in Tolkien too.
I’m not sure if that last sentence is against or for my argument.