In my opinion, I think they are a k-pop group. I might be a bit biased, but if you think about it, k-pop literally stands for KOREAN-pop. They sing in korean. Maybe some ARMY’s think they shouldn’t be considered k-pop because their songs are somewhat becoming more “western”.(BUT MOTS7 PROVED YALL WRONG) I’ve heard some people say that k-pop, is similar to pop music, and I agree. There is literally the word “pop” in k-pop. I’m not saying that k-pop is a knock-off version of pop, cause it’s not. I love BTS, and they have expanded their music to many other styles and genres, and there is nothing wrong about it.