Elon Musk’s empire, which includes SpaceX, Tesla, The Boring Company and Neuralink, is worth around US$270 billion, so it’s no surprise that he has surrounded himself with key figures who protect his personal and business interests. The No 1 person by his side, Jared Birchall, has received plenty of attention in financial circles for his stealthy business mind and ability to solve any problem for his boss. And Musk is a lot to handle. From getting high in public to raising the ire of many for his comments on the declining birth rate in the US and how he is…