I recon this is a fringe opinion but i would much prefer embrace and transform the fandom into something explicitly inclusive and progressive, many aspects of the wizarding world have so much whimsical potential to explore human expression and identity. This is also why so many (ex) potterheads are queer.
I reject Rowling as the creator, most of it builds on pre existing ideas (The worst witch, existing folklore). All she really did was stumble on a good mix and then copyrighted it.
The fandom took that mix and have expanded it much further then Rowlings tiny brain can handle and it brought them together, i hate to lose what we had because of some corporate leech that sucks money out of it.
Now about this series, obviously she is going to profit from any profit its gets, so giving them profit is unethical, likewise hyping up the show without a critical perspective is also bad because others may then buy it or merch.
But it’s still that same mix of potential. The people who make the show may not all agree with Rowlings and reflect their own visions into it. Just like the original cast distance itself from her and also managed to project more than Rowling could even comprehend that world could contain. It’s at least worth a pirated watch to celebrate what it could be, while holding a critical perspective of the flaws it will certainly have.
Hatsune Miku wrote Harry Potter