Once it’s gone, what you call “uniformity” is gone forever. And who could call Korea “uniform” except for someone who has contempt for all distinct cultures? Neither the religion, the people, nor the intellectual heritage of Korea is uniform. But it is “Korean, ” and that still means something.
Would you prefer it’s replaced with some “hodgepodge” as Obama recently called the US? Multiculturalism is drab and ugly in practice. I prefer to see different things in different places, and not just geographical features and plants. The idea of a world in which everyone is some indiscriminate shade and character is a nightmare. I have no idea why some people revel in that. Is it hatred, envy or a twisted aesthetic? I can’t tell.