Representation of other POCs take

Ok I'm curious on this topic, anyways there are ppl demanding POC representation in manhwas. I'm not talking about shitty ass racist representation but people demanding manhwas to be more diverse and some ppl are mad it isn't more of that.

It's like genshin tho that's a diff topic since its a fantasy word but modern word where the story just takes place in this Asian country. Cause for me "uh it's korean" personally, I don't think ppl should be so mad cus the story often takes place in just Korea which obv POC can live there but it's still not the same as America. You're still considered a foreigner despite living there your whole life.

I can't seem to get to demand that in a place where 90% of the population is still korean. Again im talking about a cast having more other POC characters. Like in American tv show, people demand this as if Korea is like that when it isn't.