Very good point about Ejection.That's true if all other factors are equal, but those "other factors" have a big impact on the outcome.
It turns out that being ejected from the vehicle (one of the things those airbags and safety harnesses are designed to avoid) is a big predictor of whether you are going to die or not. There are lots of data collections available on the web. Here's a snippet from one of them:
"Data from over 25 years ago suggest that individuals ejected from the vehicle during an MVC are up to 8 times more likely to die compared to those who are not, with a mortality rate between 7% and 11% for those ejected during an MVC." New cars on the highways: Trends in injuries and outcomes following ejection - ScienceDirect
So who knows? You might be better off in a smaller vehicle with airbags and harnesses than in one of those early 60s cruisers with nothing but a spear-like steering column between you and the windshield.
I'd personally like to see technology which would incapacitate mobile phones whenever a vehicle is in-gear. They're a menace.