I am suspicious of them. Thomas Keneally is right. When an author writes in the first person there must be a plausible kinship between the author and the character telling the story. Except, of course, where the character is a human being turning into a cow. Anyone may write about that without fear of misrepresentation.
All writing is autobiographical.
So if a white man writes a story from a black man's point of view the best he can hope for is the equivalent of nigger minstrel blackface - bogus, and in this day and age, objectionable. However, perhaps this only applies when the blackness itself is the issue in the drama. Humanity transcends ethnicity, and there is enough that we have in common to justify an Othello any day. The Age Company Ltd 2001. Any unauthorised use, copying or mirroring is prohibited.