You make some good points until your edit which is laughably sanctimonious and honestly a little insulting.
So the people who agree with you are in “good faith” and people who disagree with you are bigots? Because it doesn’t seem like any HP defenders here are actually being rude in their rebuttal?
You were the one who offered your opinion. Fans who grew up with this story like a close friend are going to respond. And we don’t have to agree with you.
Personally, I think you lack an appreciation for storytelling on a fundamental level. Every offense you mention is deliberate real world allegory, not coded prejudice. There’s nothing wrong with nuanced “warts-and-all” world building.
I really hate all the questions and stats around this because “one book” is not a unit of measurement, could be Moby Dick or Goosebumps.