I don’t think Harry Potter is the best YA fantasy fiction to have ever been released. In fact, now that I have read so many more books, I think Rowling’s world-building is mediocre at best, something I might not have bothered to continue had I started reading them as an adult.
I totally agree. I read Harry Potter when I was already an adult and thought it was mediocre compared to the Narnia books. But then I am also older than the Harry Potter generation so I could be biased.