Because US pop music, like most US media these days SUX.
I can attest. Have a neice hooked on Korean and Japanese pop.
Most English language music now, if I can understand what they are mumbling, is asinine. I find myself listening to more Korean, Japanese, Filipino music. Don’t know what they are saying, but if there is a pleasant voice and melody , I am entertained. I’m glad I don’t know what they are saying.
This story is a nothingburger. Spotify and YouTube make no distinction in their algorithms between US and non-US artists, so unlike pop radio, you can get exposed to non-US music very easily.