New York CNN  —  X competitor Bluesky rocketed to the No. 1 spot on the Apple App Store’s US chart this week, as many users of Elon Musk’s platform said they were decamping in the wake of his significant role in the US presidential election. Bluesky’s user base has doubled in the past 90 days — on Tuesday the company said it had gained 1 million new sign-ups in the past week alone, bringing it to more than 15 million total users. The energy on X is markedly different: Musk spent months using