What’s incorrect about accepting a risk that could kill you, such as flying on air planes or becoming a soldier? Another example is going all-in during a poker game, you’re simply saying you’re ok with that severe risk for the corresponding upsides.
My point is that stating “out of model risks is what kills you” is a tautology. For systems where known risks are modelled, it’s highly likely that any “fatality” or equivalent events are controlled for. If you were to then look at the “fatalities” that occur after that, I would expect them to arise due to risks not currently known or modelled in the system.
I make no comment around acceptance of risk, “fatal” or otherwise. :)