And why does it have so many fans and views? I don't think I know anyone who listens to it and the Americans that apparently do I highly doubt they understand Korean.
It's really fucking weird. And some of it even seems directed towards American viewers.
Well, they probably get fed the usual nonsense like "you have to suffer for your art". Well, no, it's that suffering is supposed to help produce good art, by giving the artist the life experience and the emotional growth that feeds true art.
But then, look at what they did to Elvis. Though what you describe is more like the Jackson 5 on steroids and without benefit of blood relationships.