I mean, it certainly is debatable at this point. The offense you're criticizing is about 70 spots better than Fred in year, what, 3? Fred was great at ISU but since he left, there's hardly anything to support that he's an elite mind at this point and I don't give a **** that he's at Nebraska. Either it was talent and he can't get it anymore or it's scheme. Either way, it's not the same.
Plenty of coaches over the years in all sports have remained wedded to a particular scheme or "ideology" that other teams have figured out. Refusing to adapt with the times, they usually fail.
This is what makes a coach like Bill Belichick so brilliant -- he routinely reinvents the entire philosophy of his team to meet the popular trends of the day and play to the strengths of his personnel.
Not sure Fred does that trying to play Hoiball with a bunch of ball-dominant poor-shooting guards in Chicago and a roster full of guys who seem to be pretty bad at shooting that he has in Lincoln.