Oprah Winfrey has AFAIK never ever worn her hair naturally on stage!
The Image Results of "Oprah Winfrey hairstyles" show her hair in various styles, none of which are natural Black hairstyles. Almost all have been created using more or less hefty amounts of chemicals and/or heat to get rid of the fine curls of her ~4A Afro hair.
White people are almost all racists and do not even understand how deep their 500+Years of racism goes.
Black Woman's hair is deeply political and continues to be!