ah, but Singularitarianism is different: a True Singularitarian is supposed to be able to update on this evidence, even if it means abandoning SIAI entirely.
Presented with evidence of the counterproductivity of SIAI, a True Singularitarian would then try to find a better way to help the efforts to achieving a positive Singularity, even if it meant creating an entirely new group for this purpose.
Note that "Singularitarian" is not the same as "SIAI Supporter", or "Eliezer Follower"
actually, I think the same applies to a True Christian. If a True Christian finds out that the church isn't doing its job properly, and the church refuses to correct what's wrong, then the True Christian is supposed to start their own church. And this actually happened many times through history...
It has been claimed on this site that the fundamental question of rationality is "What do you believe, and why do you believe it?".
A good question it is, but I claim there is another of equal importance. I ask you, Less Wrong...
What are you doing?
And why are you doing it?