I don't think they really claim that. I think that they'd rather say "a singularity is plausible and its effect would likely be of very high magnitude, so even

I don't think they really claim that. I think that they'd rather say "a singularity is plausible and its effect would likely be of very high magnitude, so even marginally positively increasing the kind of singularity that might come about has expected value on the level of saving the world."