i see your point but you should always put > 0 faith in Musk IMO. No robo taxi's but, even after being laughed out of the room quite literally, landing orbital class boosters is common place now. I don't doubt there's the talent at Twitter required to do amazing things and Musk seems to find ways to push and motivate talent to crazy levels of results. I'm not saying things like a more youtube than youtube is destiny but don't completely write it off.
I didn't say 0 faith, I just said I wasn't sure how much. :p
SpaceX is an interesting result, but it is starting to look more like a fluke than what we'd expect from him. Perhaps rocket scientists "get him" and understand the stakes better, after all, if you screw up a rocket you could die in the aftermath.
Tesla is certainly similar stakes -- except one mistake can kill every passenger on the road instead of your fellow employees. Twitter is basically 0-stakes, and is unlikely to take itself that seriously. If they screw up, maybe a bad government won't get overthrown somewhere, or trolls will take over the internet. But mostly, people will survive -- or rather, the outcomes are far more abstract.
He doesn't seem like a good fit for this kind of environment.