Now I'm wondering if they trained the AI on the exact same machine that they used in their testing. Seems to me that tiny variances in the keyboards of even the exact same model could have significant effects on this sort of thing. And then there's different levels of wear from usage, crumbs in the keyboard, etc.
I'd be amazed if it is actually this accurate across all machines of the same model.
My philosophy on it, specifically for this game, is that the game is so damn huge to start with it's impossible to see and experience all the content in one or even several playthroughs. I'd rather just put my completionist impulses aside, think of the game more as "D&D" than a video game, and just go forward, no matter what happens in game.
But that's just my thought for this specific game. As has been stated several times - it's your save file, do what you want with it. No wrong way to play.