this would explain why Chris Avellone said "I also have a lot of love for Ulysses in Fallout, only because I like the idea of someone hunting my player for reasons of his own, and then hearing the reasons why… and realizing how important even the smallest of my actions are for the people of the wasteland – living or dead" because he implies the courier wasn't aware of his/her actions that caused Ulysses to be mad and explains last part "living or dead" because the courier affected the survivors of the divide and the non survivors. This also explains why Ulysses said that the Courier knows the road to the divide in his audio log at Big Empty.