We still don't know why Linda Yaccarino stepped down as CEO of X on Tuesday.  Her sudden abdication came off the back of a legendary freakout by Grok, which saw the AI chatbot claim to be "MechaHitler" and praise Nazis in the course of a day.  But if Yaccarino was fed up with the company's direction, she didn't show it. Her announcement was cheery, and her boss Elon Musk gave a curt thanks for her two years of service. Clues are starting to emerge, however, that she left on less than stellar terms. New reporting from The Wall Street Journal […]