Appropriation has more to do with history than just that. It's not okay because up until 50 years ago, the law of the land was to steal and and subjugate native people from around the world for Euro imperial benefit. They nearly obliterated all natives, raped them, stole their kids, introduce poisonous alcohol, all across the Americas, then they want to dress up as a sexy Slave native girl or a drunk Indian on Halloween? Appropriation. They shipped millions of Africans to this hemisphere as slaves, killed raped and subjugated them, then they want to dress up as black face at a frat party? Inappropriate. NO MINORITY has come close to doing what they have done to people AROUND THE WORLD. A black Person wearing a fukking tie to go to work or owning a tv to watch the news is not the same lol. Maybe if past relations weren't riddled with blood and greed, them dressing up as us( which NOW is to laugh at us or get a boner or communicate that we are dumb) wouldn't feel like a slap in the face.
A white person moving to the African safari and living in traditional homes and using native tools to hunt and kill food isn't appropriating. I don't think wearing braids is appropriating because Vikings had elaborate hairstyles involving braids. I don't think hair is a problem at all unless you're trying to communicate a message involving mockery.