Tangentially, I feel that concept is just a thin layer of paint on a not-too-compelling idea that could happen in any time period: "Thog, what if crazy god get summoned by other cavemen, and it punish all who no help!? Me no take chance!"
A company who I used to work for (whom I will not name) purged all management that did not vote in a particular initiative; after said initiative had been in force for a while and put more people in positions of authority (because of said initiative).
Its not just a thought experiment, its a statement about what could happen if you stay politically neutral and fascists take power.
The frequently ignored point of Roko's original argument was not that an Unfriendly AI could arise, or even that it would be probable given no preparations against it (these were already said by Yudkwosky), but that even a Yudkowskian Friendly AI might engage in such acausal blackmail stuff.
Saturday morning infohazard :)
I read a few things that are blatantly wrong about Django and other tech.