calling in the wilderness

The basic argument is: there's some risk of the ASI ruin, if it's built. There is certainty of death for me & everyone I care about if it's not. I'm happy when alignment research pans out, and I work to increase the odds, but I oppose any research/advocacy making timelines longer

Doesn't the argument about inefficiency of space cooling (ie vacuum is an insulator) fundamentally prevent Dyson spheres?