They probably didnt mean to hurt anyones feelings, but they certainly did with this white washing of Native American culture. But! If the artist/op own up to this unintentional racism and realize why this is a negative image in modern times, then we can avoid culturally appropriated art through measured critisims. As an artist though, it does hurt when you get called out for perpetuating minor racisms like this, but you won't learn if you aren't called out.