‘The Forty-Year-Old Version’: Black artists risk compromising their work to reach mainstream audiences

Critics review “On the Rocks,” about a New York woman who uses her father’s help to figure out if her husband is cheating on her; “The Forty-Year-Old Version,” a semi-autobiographical story of a struggling playwright who reinvents herself as a rapper; “Save Yourselves!,” about a Brooklyn couple doing a tech purge in the wilderness, making them unaware that aliens are attacking the planet; “Dick Johnson Is Dead,” a documentary about a filmmaker who stages her dad’s death in creative and funny ways.