[ChadNauseam]

> and cunning, greedy creatures with long, hooked noses that run the wizarding bank

I don't think they're portrayed as greedy? Although I'm willing to be proven wrong if anyone has textual evidence otherwise. They are also mistreated by wizards in the books, which I think portrayed them sympathetically. I remember scenes where Harry notices their mistreatment and thinks it's wrong

[soraminazuki]

The portrayal was anything but sympathetic when Griphook was slaughtered by Voldemort right after betraying Harry and taking the sword of Gryffindor in his possession.

Also, notice how real world tropes are just portrayed as facts in the Harry Potter world.