Speaking purely anecdotally, it could be because some people have trouble discerning between the culture, the broad ethnic groups considered to be 'Chinese' no

Speaking purely anecdotally, it could be because some people have trouble discerning between the culture, the broad ethnic groups considered to be 'Chinese' no matter where in the world they are, the headline-generating government of the P. R. of China, and Chinese nationality of people who were geographically there when they entered the world. This leads to all sorts of arguments of "the Chinese are horrible people and can't be trusted because their government does terrible things."