To be honest with you I never thought Bill Cosby was all that talented or all that funny. And he certainly lost any moral "authority" he had (in his role as the faithful to his wife black man), when he admitted to "ministering" (Hillary Clinton's term for what Bill was doing for Monica, and of course she's the smartest woman in the world, doncha know?) to that trollop who was trying to extort money from him.
And while I certainly can't say for sure, I don't think he takes to white people very well. He was asked in the early years of his "family" show why he didn't have any white people/characters on, and his reply was "let Mary Tyler Moore put them on her show".
She was too busy putting "Reds" like ed Asner on...