He might not be wrong, but isn't this just another Westerner explaining things to you based upon an academic class, with no real exposure to your culture? After all, a westerner with Korean/Mexican ancestry does not have any special insight that any other westerner would have, and should not speak for all Asian cultures.
I kid, but only to make the point. You have had a lot of valuable input into the issues here, yet your input is diminished by some people because they claim you can't speak for the experience of Asian-Americans (as if that group is a monolithic whole). Nevertheless, others choose to speak to your experience based only on academic classes. Which is weird.
That said, I agree with you and think that true understanding of positions is best achieved by sharing opinions.
I have had vigorous debates with people on the internet where I am lectured on solar power and I personally enabled a lot of what is in many places in the world.
I have been lectured by Asian appearing people about Asian things even though they have never actually been to Asia. I cannot claim to understand how they feel as an Asian minority living elsewhere (even though I was a minority growing up and lived in Asia for 8 years and even was a very visible minority there).
I will make an outsider observation - if you want to see more traditional Chinese family values, the decedents of the Chinese that settled on the islands near China but were somewhat cut-off and a minority cling to the older values.
Just like the French I speak (Quebec) is not the same as the French in France. We can understand each other fine, but you need to pay attention and ask for explanation.
I have already said that different people can take offense to different things and be genuinely offended without a call to action to me other than being polite.
As an RPG sourcebook, OA fails because it directly refers to actual thoughts about actual people in the real world - they list actual countries - and then clumsily expresses it as game rules.
If that same paragraph without the reference to being broadly applicable to Oriental society had instead described a new, non-human race , even if it borrowed from that monolithic view, it would be fine. I mean, my sentence construction there is not fine, but the use would be.
So I have zero issue with slapping a disclaimer on it today and having an honest conversation about the offense and even hurt it could cause. Panda-s1 has been more than polite as have others here explaining how they feel. I don’t think more than a disclaimer is needed and that is only needed to leave no doubt that the owners understand. In the end, Hasbro owns it and they can decide what to do about it.