Apologies for the second reply but I've been thinking a bit more about this and there's something else that's troubling me here, a conundrum, if you will, and I'm not quite sure how to square the circle.
I didn't read the book either, so I can't say whether the story is handled well or not. But I'm guessing, based on the information at hand, that it's "demure Asian woman saved by valiant white prince," which would be a trope.
But again, I didn't read it--it might not be tropey at all, for all I know.
I understand why stereotypical tropes can cause offence and pain. I agree they can be harmful.They can be used as propaganda tools, deliberate attempts to portray another race as inferior in fiction, or unintentional "whoops I didn't realise it would come across that way, my bad!" screw ups from an author who owns their mistakes and tries to do better next time.
But here's the problem, and I'm honestly not sure I know the answer.
What if I AM a trope?
There are over 7 billion people around, and I believe people's personalities come in a vast spectrum. I don't think it's reasonable to say that a person MUST have this personality trait just because they are white, or must have THIS reaction to a situation just because they are a women.
But I don't think it's reasonable to say that a person of that race/gender/sexuality/insert group name here CAN'T have that reaction or trait either.
Because somewhere out there, a real person will indeed fit that trope.
So let's hypothetically say that I actually AM a young Korean girl who is demure and shy (seems possible) and actually loves the romantic idea of a boy saving her and genuinely wants of her own free will that sort of relationship dynamic (seems possible). Let's say that the rough sketch of Cho actually sort of does correlate to a minority of Korean girls who sort of roughly fit that rough sketch (in the vast spectrum of human variance, it's possible.)
By saying that
this kind of person of this specific race is considered a trope and is Problematic and Racist and should not appear in fiction, you're essentially invalidating me as a person. You're saying that people like me should not be represented in fiction. That people like me are actually HARMFUL when portrayed in fiction. Even if we are seen as a good person in the terms of the narrative, maybe even a hero, the fact that we are shown to possess these traits means that we are Problematic, and invalidates our character, and the author should apologise for portraying someone like me.
So so lets say Rowling removed Cho. And I never got to see someone like me represented as a hero in one of the most beloved fantasy series in popular culture.
In other words, the criticism of unintentional prejudice by use of a stereotype becomes unintentionally prejudicial. It becomes a snake that eats itself. Groups inside a certain race are excluded from media culture because other groups believe they should not be portrayed in fiction as they possess "inferior" or "undesirable" personality traits.
How to square this circle?