Linda Yaccarino, one of Elon Musk's top deputies as CEO of his X social media site, is exiting the company in a surprise move just months after the platform was acquired by the billionaire's AI startup, xAI. Yaccarino, 61, made the announcement in a post on X suggesting it was her decision, though Musk has a history of dismissing deputies suddenly. "I've decided to step down as CEO of X," Yaccarino wrote. Her departure adds to turbulence in Musk's sprawling business empire, including falling