Gophers fan here.
I'll tell you right now, this was never the case. This is revisionist history.
Jerry Kill was a heck of a coach, and the school (and fans) wanted him to stay in the job for the next 20+ years. Unfortunately, the fans didn't know about his epilepsy and the school didn't know how badly his epilepsy was going to be aggravated by the stress of major college job. But if Kill had been able to stay in the job, it probably goes without saying that we would have enjoyed more success from 2016 to now than we have.
Fleck might have a higher ceiling than Kill, but we'll never know for sure. Kill will always be a 'what might have been.'