You keep throwing out what look like irrelevant straw-things questioning points I haven't made
Really? I questioned the "power fantasy" angle, shortening it to just fantasy. There is no reason for looking for a deeper meaning when a simple one would suffice.
You're also talking about Harry Potter being a retreat for "White people", so I pointed out that Rowling from the very beginning had people of color in the books. Back when there were no social media and even the Google Search (the book released in 1997), so nobody was going to burn Rowling - a debuting author at the time - for not being politically correct (by not writing about them at all).
Hogwart's Legacy, by comparison, is Harry Potter amped up to eleven, because of the social media and the political correctness getting stronger by aforementioned social media amplifying the voices of the few and "video game journalism" feeding off of the "controversies" (so the waves are even larger). I agree it's stupidly ahistorical and unrealistic, given the timeline, even for the setting, but it is still in line with Rowling's Harry Potter not being an exclusive school for "White people". And as should I can't agree with this being the reason for the books popularity.
Hopefully that explains why I made the points that I made when responding to you.