All music is derivative. And if you think the best vocalists or musicians should be the most popular I may have some shocking news for you. The idea that American pop stars are authentic is pretty funny.
Yeah Korean pop idol culture has some extremely toxic elements to it, but so does American celebrity culture. I don’t get the feeling that’s what’s bothering you though.
My lukewarm take is that all this hate on AI is really just hating on big companies trying to squeeze money out of some new development. AI (or rather LLMs) are not the problem.