No, it's not. There's a lot of K-Pop songs that i don't like because i find the production to be too loud for my taste, but there are a few songs that i like, like Mr. Simple by Super Junior.
Generally speaking, me liking or not liking a song has more to do with the production than the language or the lyrics.
There's this one song by a Malaysian girl group that i really enjoy even though i still don't know what the lyrics say. The production in it is amazing, it sounds really fresh:
Voted yes But in all seriousness no, many people like being able to understand and sing along to lyrics so K-pop may not be for them, assuming they don't speak Korean ofc.
Nope. It's about language barrier than anything. At least K-pop still has noticeable global followers outside East Asia. Can't say the same about other languages other than English tho.
But in all seriousness no, many people like being able to understand and sing along to lyrics so K-pop may not be for them, assuming they don't speak Korean ofc.