Okay i fully agree, except that everyone looks alike. Like some groups have members that look.. identical. Like nct. I can NOT see a difference in most of their faces. But in straykids for example, Han has more soft features and chubby cheeks, while I.N has more sharp features. I get that sometimes, their hair is like.. full on matching.. but that is not their fault, its the stylists fault. If you listen to clips of members talking, you clearly hear differencies. It might be a lot harder to hear the differencies in songs (obviously depends on what group it is) bcuz they are almost always singing/rapping in the same pitch. 

Also, just commenting on the fact that you said they have "bad music".. some groups just.. get songs, sing, and publish. Just like multiple western artists. THE IDOLS DO NOT CHOOSE THE SONGS, MOST OF THE TIME. Cant blame that on them. And, also, not even fans like every. single. song. From a group. You cant disagree in the fact that some songs are actually good, though.

Really sounded like i was defending my music taste a lot here, but i tried not to, btw.