Let me pull a Y and say that your post is totally worthles DS. :<

It could very well happen, the chronicle of what occurred to make the humans stop having to live in hiding and the Jacks/Vics stop having to be repairmen could easily transmit across the nation/world. They definitely have the technology to do so and Jack is already curious enough. The Scavs themselves ought to have a network of communication of some sort, I mean this happened post 2017 and it wasn't exactly a secret that the humans were all being wiped out by a million Jacks. Only a secret from the Jacks/Vics themselves.

And regardless of whether it was an alien or an alien AI, that doesn't mean that they can't just send another one to soak up all earth's resources like they it had been doing to other planets.