Earlier this month, just as Hollywood was leading a revolt against a now-aborted Instagram feature that would have allowed users’ public photos to be transformed into A.I.-generated images, Meta was in court trying to keep a very different dispute out of public view—its battle with Sarah Wynn-Williams, the former Facebook public policy director who chronicled the ruthlessness and hypocrisy of Mark Zuckerberg’s social media empire in her memoir, Careless People. Wynn-Williams has been largely unable to promote the book because of a nondisparagement clause in the severance agreement she signed in 2017, and the arbitration that Meta initiated last year. Despite those efforts to silence her, or perhaps because of them, the book became an instant bestseller.