To my knowledge this claim seems to be almost entirely fabricated as the only text that is vaguely reminiscent of this claim in the original thread is a claim from Roko that “One might think that the possibility of CEV punishing people couldn’t possibly be taken seriously enough by anyone to actually motivate them. But in fact one person at SIAI was severely worried by this, to the point of having terrible nightmares, though ve wishes to remain anonymous.” which along with describing the experience of a grand total of one person only refers to anxiety resulting from an idea related to the premises of the thought experiment and not the thought experiment itself.
To my knowledge this claim seems to be almost entirely fabricated as the only text that is vaguely reminiscent of this claim in the original thread is a claim from Roko that “One might think that the possibility of CEV punishing people couldn’t possibly be taken seriously enough by anyone to actually motivate them. But in fact one person at SIAI was severely worried by this, to the point of having terrible nightmares, though ve wishes to remain anonymous.” which along with describing the experience of a grand total of one person only refers to anxiety resulting from an idea related to the premises of the thought experiment and not the thought experiment itself.