Right. The vague concept existed before in many different forms. She put hircruxes in her books and made them a thing that people understood. I’m not saying she’s a great writer, but she clearly appealed to a lot of people with her writing, and not just kids. Her stories at least had decent morals. I’m not defending any of her anti-trans crap, but her Harry Potter fiction is a separate thing.

Um, where else did you get your original definition of a horcrux?