Rowling started out making a fairly bog standard magical kids book. It was all about the fantasy of being a wizard, and relied on tropes so old they get found in La Brea.
This isn't a bad thing. There's nothing wrong with that kind of kid lit.
But she wasn't a good writer. She was mid tier at best. So the eventual success of the series got beyond her abilities. While the last book was much better overall than the first few, it still relied on shoddy world building because she had chased sales.
She tried to turn a kid's light fantasy into a YA fatasy-adventure. To an extent, it worked. And I don't mean that it wasn't successful, she had a hit on her hands because the idea behind it all was brilliant. It pulled from a long history of British youth fiction, and added in fantasy and magic and a ton of tropes.
But from the perspective of a coherent story in a coherent world, ignoring the success in terms of sales, it was cobbled together without a plan, and it shows. It wasn't until maybe order of the phoenix that she had a plan for how the story would end, and she had to do a lot of hand waving to make it happen.
Again, that's okay. Nothing wrong with a bit of light fiction. But, it had cultural impact way beyond its original scope. So it draws the same kind of analysis that something like LOTR does, and it just can't compare. It barely holds up to comparisons with Narnia, and Narnia at least kept things vague and mystical without trying to get into the mechanisms under the hood.
For whatever reasons, Harry, in the books, long before the movies, resonated with kids. So the series exploded. And now everyone pokes at it like it was ever supposed to be literature, with any serious thought behind it. It was all broad brush strokes on construction paper from the beginning, expecting anything in it to hold up to scrutiny is like expecting politicians to be honest and up front. It is what it is.
I mean, the whole thing is this big fever-dream written for kids; yanno, a fairy tale. At the same time, our author is someone whose internal moral compass is pretty twisted up. So, logical consistency left the building long before pen was put to paper.
Also, fledgling authors take note: this is what happens when you flagrantly defy thermodynamics over and over again. Nerds will rip your work to shreds.
What about time travel? They had a pocket time travel device and they couldn't strangle baby Voldemort? Or was there some Avengers endgame multi dimension thing preventing that?
I think nothing beat the fact Slytherin still exist after the founder basically came out as a racist and want racist rule to be enacted, and also only accept student that's either a racist or speak parseltongue, and also the student literally live in a dungeon that's dark and gloomy. You'd think after a few years Salazar left the other founders will take note and change the way the house pick their student and the living condition of the student quarters, but nope.
And you'd think this is a story about the danger of tolerating the intolerant, then the writer became the intolerant lol.
As someone who has read an absurd amount of fanfiction, I’m willing to bet that this (adults holding the idiot ball) was done on purpose because if the adults aren’t morons then there’s no plot tension for our protagonists to resolve.
JKR is a TERF with terrible writing skills and worldbuilding. The idea of a comfy, cozy british castle where you could fulfill your magical dreams and get sorted into a house is an incredibly fun self-insert universe, just like Pokemon, Star Trek, etc.
Wait, the reason they don't use this potion is that it's hard to make?
Wouldn't you make it once and use it to make more by just dumping random ingredients in a pot to get an infinite supply? It seems like the wishing for more wishes situation pretty straight up.
This is what I get for letting you trick me into thinking about this dumb thing, I suppose.
It's not meant to be a well sewn up world building project. It's literally two different worlds smashed together on a bunch of napkin notes. None of us read it for its intricate political maneuvering or realistic magic system.