It was more than just a personal choice; it was a choice to save his family. IIRC, he went pro because his mom's house burned down in the offseason, and he decided he needed to make money for her. I feel like that's a pretty good example of the character ISU wants those rafter jerseys to have.
Big thing that gets ignored is he could have been a first rounder after his sophomore year and already forewent that. He doesn't do that, there goes ISU's biggest season. The more I think about it, it's really a no brainer.
It cheapens the other jerseys that are up there. You want to ask "Are these the best careers by Cyclone legends?". The answer is "No". It's mainly "No" yes because of Fizer and Tinsley. Fizer made two huge choices that put ISU above blue blood colleges and the NBA. That's more than enough to put in an all time great. Tinsley maybe more of a gray area. It's hard to think of another player who gave up more to help ISU than Fizer when you consider he could have played for a blue blood and went to the NBA an entire year or two earlier than he did.