it has a no tolerancy policy against transphobia
Does this include discussion of Rowlings current work like Bad Blood?
I ask because it gets to the core of why "separate art from artist" can't apply when you are promoting the works of active bigots. Reading Poe or Seuss harms no one, but starting a community to promote upcoming projects from a bigots, such as the TV show or the games.
It feels HP fans want to have their cake and eat it to, you can't be a trans ally AND be promoting the works of someone who uses that capital to actively harm trans folk. Which is why so many trans people are asking you to stop.