In some ways I don't have a horse in this race per se. I enjoyed the Harry Potter books and many of the films, but I also kind of checked out of the franchise in the intervening years.
Iif you ask me (which no one isn't). If your seriously annoyed by Dumbledore's straight washing, the only way its going to be fixed is if they loose more money straight washing him than they stand to loose by identifying him to mainstream audiences as gay.
So if your annoyed boycott the film.
If you see the film in spite of your annoyances then your giving them no economic incentive to change their behavior.
@maiki Not urban fantasy but Mercedes Lackey's Valdemar books tend to be incredibly progressive, egalitarian and LGBTQ friendly. Lots of female protagonists too. Though the older the book the better the quality usually. Her most recent stuff is fun but not as tight as her older stuff.
@satchmoz Got recommendations for inclusive, consistent fantasy stories?
One that I read that reminded me *a lot* of Happy Potter, by worldbuilding: A Hero at the End of the World, by Erin Claiborne.
It hit that "modern magic" spot for me, and has a bunch of weird and compelling characters.