[seanhunter]

No it's not.

We have no interest in the question of whether the apollo astronauts who have already died will be alive when a human next walks on the moon.

The question is of the apollo astronauts who are still alive, what is the probability that they will still be alive when a human next walks on the moon.

The population under consideration is only astronauts who are alive now.

Survivorship bias would only be involved if you were considering some question that involved all apollo astronauts eg for example if we used the population who are alive now to make a prediction as of the completion of the programme.

[keybored]

No... The original comment said that the youngest being 88 is “way beyond the norm”. They weren’t talking about whatever you are on about now.