This whole thing seems so wildly overcooked to me. I can just feel the good-intentioned people at Disney trying to get the message through to children of the next generation: "You must value the idea of a pluralistic society! Don't make this mistake!"
But is there really no other way to imagine a society that isn't "universalist" in nature? The Chinese, for example, have a long history of not exactly embracing outsiders -- but they also, excluding the cases of Tibet and Taiwan, generally don't go meddling around the globe. In other words, China is not a particularly pluralist civilization; yet maybe we don't have to fault them for that? Maybe it's okay to write off others (politically) because they are different? Is it always a fault to take refuge in a society with others who are like you?