How X CEO Linda Yaccarino went from Madison Avenue star to Elon Musk's fixer

Linda Yaccarino spent two years at the helm of X before exiting. Jerod Harris/Getty Images for Vox Media Linda Yaccarino stepped down as X's CEO on Wednesday following a two-year tenure. Elon Musk hired her to help revive the social platform's ad business. Instead, she spent a lot of time doing…