In a world of men with ear-to-ear carpeting, women who dye or bleach their hair every month or two, and make-up that gets a new layer during commercial breaks and has to be taken off with a cold chisel. what is "natural"? Not that there's much natural about the hairstyles of many/most black women walking about Oakland or Hunter's Point or ... for that matter, what is natural about hair that is cut, washed, or styled? Are the DU-folk invoking a stereotype of blacks?
My (naturally blonde) daughter once had her hair braided that way for a couple of months. She was in Suva, Fiji, and the humidity had her hair frizzing out, doubling the circumference of her head. Between not snagging her hair when she was going around the city and the low maintenance of the style, it was very practical for her. It was done for her by a Fijian, who would have been either of Melanesian or Indian ancestry (or both). Neither are African people groups, so where's the "cultural appropriation"?