It's just a pity that the creepy doomer weirdos so thoroughly squatted the term "rationalist." It would be interesting to see the perspective on these people 100 years hence, or even 50. I don't doubt there will still be remnant believers who end up moderating and sanitizing their beliefs, much like the Seventh Day Adventists or the Mormons.
Now the _timeline_ of AGI could be anything from the a few years to millennia, at least if evaluated 40 years ago. Now, though, it really doesnt seem very distant.
Anyway, when/if AIs start to create the narrative to the extent they can author our religion, they already have full control. At least if some AI decides to become a God with us as worshippers, at least we stay around a bit longer.
Probably a better outcome than if it decides that it has better uses for the atoms in our bodies.
In fact, this may even be a solution to the alignment problem. An all-powerful but relatively harmless (non-mutating, non-evolving, non-reproducing) single AI that creates and enforces a religion that prevents us from creating dangerous AI's, weapons of mass destruction, gray goo or destroy the planet, while promoting pro-social behaviour while otherwise leaving us free to do mostly what we want to do.
A still possible future is when science makes a breakthru in quantum computing and finds a way for humans to steer AI with their minds: it would be the neuralink in reverse. This would force science to research the true nature of that connection which will help to avert the AI doom.