I was just a university Freshman just starting my CS classes, and seeing this discussion, it was like I had entered some underground revolutionary meeting. It opened my eyes to mischief and testing the boundaries of systems and order where this guy who was on IRC as root@system was just calmly saying how the technical universe I was just learning about was controllable in ways I had no clue about.
I never followed the case after he was prosecuted, and I didn't go down the hacker route in my career, but it was a life-changing moment for me to see this outsider live out "War Games" in real life.
RIP, root. Your crimes and mischief certainly didn't define you, especially as you went down the ethical hacker path (the first?). Pancreatic cancer is a horrible way to go, I am sorry to see this story today and condolences to his family and friends.