Korean instruments these days are mostly not bad. The days when they were simply cheap rubbish have largely passed, as China and SE Asia have taken over (by virtue of being cheaper), in the same way that Korea took over from Japan 15 years ago when they started getting better and more expensive.
High end Korean guitars now can cost over a grand, and many pro players use korean made instruments.
Of course there are still some lower end models, but like I said, most of that work has moved elsewhere.