If this is true, then it is also true that only Japanese people can decide whether she needs to apologize or not. And that means that you, not being Japanese, have no business weighing in on this. So far I haven’t seen anyone Japanese criticize her for this. That’s probably because cultural appropriation has always been an essential part of Japanese culture. Almost any style of music you can name – Celtic, jazz, Bluegrass, Paraguayan Harp, funk, reggae, Jugband music, – there is a community of Japanese who play it with flawless technical precision. In fifth century Japan, almost everyone in Japan. was learning Chinese, writing Chinese poetry, and studying Chinese philosophy. In 19 century Japan, the entire country copied everything they could from Europe and America, and became the first Asian country to fully industrialize. Those “Japanese” school girl uniforms that you accuse Ms. Stefani of “appropriating” are exact copies of the uniforms worn by British School Girls. Cultural appropriation is as Japanese as sushi, and to criticize cultural appropriation is to criticize the essence of Japan itself.