Each and every one of them is fully aware that it’s a massive risk and has made their peace with that. You’re getting strapped to a giant rocket. It’s inherently dangerous
Maybe this is a perspective or semantics thing, but I think it’s distinct and important. They’re not Mavericks they’re Icemans.
Hopefully they're well-understood and meticulously mitigated risks. Because if they're not... well there's always modern day Boeing.