I wasn't too fond of the books when they were first published (showing my age here), and I don't feel a need to reread them. But here's the fun thing about stories: you can find whatever you'd like in them. As a reader, you are allowed to put part of yourself into the story; it is no longer just the author.

If you want Harry Potter to be a story about queerness, it is yours to make it so. If you want it to be a story about the problems of British education, it is just as much.