I'm not even sure it's specifically a matter of Kingdom Hearts so much as their own unwillingness to feel culpable in any way; obviously, I didn't think you meant to imply that anyone who plays KH is racist, but sometimes people become strongly defensive against such ideas when they have a personal investment in them, especially when they suspect there may be a notion of truth about them. It's not an uncommon mentality, unfortunately; I've had a myriad of rather frustrating encounters trying to explain how, as an Indigenous person, movies like Pocahontas and Peter Pan (though only in some aspects with regards to the latter) are extremely offensive to me (and how my relief at them having not been incorporated into the KH universe as of yet is unimaginable). It can be difficult to get people to hear that: they would much rather indulge and justify a romanticized stereotype than lend an ear in order to learn why they're harmful, negative appropriations of cultural identities. I think a lot of it stems from the fact that they don't want their interests to be categorically linked to racism; so they deny the notion of racism where it benefits them and recognize it only where it is an immediately obvious and socially fixed conclusion. As such, in the minds of certain audiences, racism is a very limited concept; or, rather, their concept of racism is very limited. Unless a black person is called the N word or physical, undue harm is involved, it often becomes a matter of "opinion" where it doesn't really sustain a debate at all except for the fact that childish fantasies are an apparently stronger motivator than reason and an educated standard. :/