I genuinely hope this works out for this guy, and everyone else who could benefit from it. This dude volunteered because basically he might as well risk dying in return for a meaningful quality of life. That's an awful situation to be in.
But the fact is, Musk is a self absorbed narcissistic conman, and he has never taken his customers safety seriously in any of his businesses. You don't beta test self driving cars on public roads if you care about people's lives.