I played the game and now I have watched the video. And no, there isn’t much more to the story than revenge. The problem wasn’t that I wanted the satisfaction of Ellie killing Abby. The problem was that I wanted Ellie to learn to let go of her anger and not go after Abby in the first place. It’s worth noting that Abby was able to do this in the theater, after Ellie killed Owen and Mel. I found it hard to believe that after everything, after Abby spared Ellie and Dina (and, it turns out, Tommy), Ellie still needed to leave her family to go after rumors of Abby in California.
Separately, I also found the last fight scene hard to believe. We are told that Abby had been left on the pillars for weeks or months, effectively crucified. I assume that everyone else out there was dead, or else it was pretty shitty for both Ellie and Abby to not cut any of them down. Hard to believe she was able to walk, let alone put up that much of a fight. It’s a long time since I expected videogames to be “realistic,” but a certain amount of suspension of disbelief is necessary.