That would mean the goal is not escaping death per se. The goal could be escaping a painful death or particular kind of death. There was a hint of a false dilemma.
I think the supposition that he saw death from aging as unpreventable is supported by his lack of explicit advocacy for anti-aging research and by his public dismissal of cryonics. But that's probably because the current evidence is too fuzzy. We don't have the ability to bring back a cryonics patient, and we do know the damage involved in preserving them is non-negligible.
If he actually saw reversible human cryopreservation in action, with negligible damage, I doubt he would have abstained from taking a ten or twenty year jaunt to the future to see if they have a better treatment available for his cancer, or any other disease of aging.