So just finished this literally 10 minutes ago, amazing game. Interested to see what happens with the rogue HADES being captured by Sylens, and if that means he will once again serve HADES or if he will truly get his quantum physics teachings.
Fargo's reasoning behind deleting all of APOLLO kind of makes sense in that he wanted the new humans to start afresh, but the whole idea behind APOLLO was that the "new Earth" could start afresh but be more wary of these machines and what they can do in the wrong hands. Deleting that knowledge basically doomed humanity to repeat itself, thus causing what Aloy had to deal with and the rise of HADES.
I am intrigued though, according to the logs the disaster and fall of original humanity was over 35,000 years ago, correct? So in that time GAIA has been in hibernation, or was she using that time to crack the code on the original robots and placate them, allowing her to reform Earth as per her coded instructions? Because GAIA herself stated that she created Aloy to remove HADES and allow the recreation of Earth to continue, and Aloy being only 19ish means the rise of deranged machines was only happening recently.
Then there's the history of the Red Raids, which sound like they happened before Aloy's birth, at least 30-40 years before. In that time there were deranged robots, and the then Sun King thought it best to sacrifice humans to sate that derangement. So when did HADES become rogue?