Far too many talking heads and only very smal clips of his comedy genius/his interviews, the more general ones, another "comedian" who is a black female, is clearly using the opportunity to talk about Richard Prior, to promote herself. And as with many talking heads, they are just "admirers", using the "documentary as a potential vehicle for their own careers.
Also how on earth can the Diana Ross/Motown bipic ogf Billie Hoilday, "Lady Sings the Blues", be called a blaxplotation film?