The thing is - if you look at Musk's other ventures they were in dire straits for a long time, critics called them impossible even, but he managed to turn them solvent ... somehow. SpaceX for instance was a money-pit for the longest time and was lambasted by every sensible investor. So while I share your skepticism, the "shrugging off" you are observing here is pretty much par for the course. True, Musk does indeed have a tendency to over-promise and over-sell but this is a trait he shares with almost every CTO.