Not long ago, Mike Daisey was heralded as a modern muckraker, plumbing the intersection of Apple consumer products and Chinese workers’ rights. Now, he’s another poster boy for fabulism. Earlier this month, the public radio show “This American Life," distributed by Public Radio International, retracted its popular story “Mr. Daisey and the Apple Factory’’ - a tale of Daisey’s supposed visit to a manufacturing plant in Shenzen, China, adapted from Daisey’s stage monologue “The Agony and Ecstasy of Steve Jobs.’’ Another public radio reporter uncovered the truth: Daisey had invented many details of the story, including guards with guns, a 13-year-old employee, and factory workers gathering, implausibly, at a Starbucks.