system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter] Why does anyone care if the Shrieking Shack is "haunted"?

So, to cover up Lupin's lycanthrophy, the rumor was spread that the shrieking shack was haunted, to scare people off from investigating. Reasonable enough. There's just one problem. It's in the village of hogsmede, populated entirely by wizards, and there's absolutely no reason wizards should give a fuck about ghosts.

At Hogwarts you see a ghost probably once a week. If you're a girl, you see one every time you go to the bathroom. They're commonplace parts of the school life. And they're harmless. Annoying, but they don't seem to be able to possess people or hurl furniture or any of the other Ghost abilities you see in fiction. They just stand there and look sad.

So who cares if the Shrieking Shack is haunted? It's the Wizarding World. *Everywhere's* haunted. It's like saying an abandoned building has a rat nest. Icky, but if you're already interested in exploring, it won't scare you off. 

What's it gonna do, scream at you?
gpt
I think they use "haunted" to mean "inhabited by dangerous supernatural things" rather than specifically for ghosts. So it could be full of boggarts, dementors, trolls, wearwolves, murderous house elves, or any other dangerous magical creatures. People just say haunted because it's easier than going into specifics, especially since no one really knows what's going on there.