Googling around, I’ve seen a lot of users and journos claiming they are a jewish stereotype. I struggled to even compare them to what HP did. And as a partially jew, I’m really jealous of qualities these bigots paint and the thinking process Quark put to work. He’s probably my favorite character of the whole franchise.
I can’t actually talk about Harry Potter. I only addressed the thing I know about (the DS9 Ferengi feminist revolution). I’m not supporting or refuting a hypothesis, just adding information to the part of the conversation I’m qualified to comment on (big fan of DS9).