It also provides a personal incentive to hurry the intelligence explosion along so that it occurs before the death of the people signed up for cryonics.

What?! If I do something to increase my chances of being revived given a positive Singularity after my death, then I should be more willing to pursue a strategy that increases the chances of an eventual Singularity being positive at the expense of the chances of a fast Singularity which would occur before my death.

Cryonics, be increasing the time we can wait, reduces the pain of delay.