[krapp]

Also, styles of music aren't equivalent to the culture that produced them.

American rock has its roots in Jazz and Bluegrass, which has its roots in the African slave diaspora. Japanese Visual Kei was influenced heavily by American glam rock bands. Does that mean Visual Kei merely an imitation of American culture, or that it expresses the same things that American rock does? Of course not. You can borrow the sound and the style but still make something culturally unique.

K-Pop is probably more "Americanized" than Japanese pop, but it's still distinctly not American. I don't think anyone would confuse either Japanese or Korean culture for American culture, even though both incorporate Western aesthetics and English into their cultural expressions.