Educating people about the harm bigoted content brings with it is the right thing to do.
But I do not think HP is bigoted content, no matter how bigoted its author is. It certainly has some problematic aspects to it, don't get me wrong. But I don't think that it ultimately champions, supports, or frames in a good light any form of bigotry. It, in fact, often does the exact opposite. I think part of what is so jarring about Rowling's bigotry is that it came out of nowhere for fans of her work. It is entirely unexpected because it is straight up antithetical to much of the messaging in her books. The irony is not lost on me, but I would rather use the anti-bigotry messaging in HP to inform my life and use it against the creator herself than to feel guilt or disgust over enjoying those stories, just because she is a cunt.
These stories that have been a part of my life since the time my first grade teacher read the first book to us until I drove myself to the midnight release of the 7th book 10 years later and even beyond that. The first book series that I ever willingly picked up and read myself after hating reading because of my ADD, that showed me I could actually love reading if I found the right story and stuck with it, even if I read slow. These stories will always hold a special place in my heart, and no one judging me on the internet nor that hateful bitch of an author will change that. I make no apologies for it.