Personally, I've never really understood what all the fuss with Harry Potter was about anyway. Maybe it's because I started reading adult fiction in middle school and had already read better books by the time Harry Potter became a thing, but when I finally got around to reading it in college after the entire series was released, I thought the books were...fine? Not awful or anything, but nothing special. I guess by YA fantasy standards, they're above average, but that's also not saying much. Joe Abercrombie's Shattered Sea books are way better in the genre, though, and are really the only YA fantasy books I feel compelled to ever read again at this point in my life. Maybe the Mistborn books too if you count those as YA.
If I play the Hogwarts game, it'll be when it's twenty bucks or less on a Steam sale anyway. I don't see much of a point in buying single player games when they're brand new anymore except in a few rare cases, and this ain't one of them.