Rivian used ten times more capital to reach their first delivery and twenty times more before their IPO as compared to Tesla.
It looks like it's not Musk's money making his companies successful.
Back when America's star was rising, that was far more common.
And that was the first I'd heard about high fatality rates for Tesla, so I looked it up. The cars themselves are always rated as very safe, and it seems the reason for high fatalities is just who buys them. Apparently, it's young, affluent, more risk-tolerant people who frequently drive fast on highways.
Also, Musk is nothing special this way. Honest comparisons would be to cell phone tower workers, steel mills, hazardous chemicals handlers, farmers, and such.
Vs. most people's mental comparison is to working in a comfy office.