I get it. Lincoln Riley has created an all-world offense and demonstrated that he's a scheme and QB guru, but he hasn't shown the ability to field a competent defense. Consider whether Oklahoma would be better off with a different head coach who completely handed the keys of the offense to Riley. The offense should be the same, and the defense could only be better.
Ryan Day is currently in the same vein. He's an offensive genius. He made Haskins a Heisman finalist and a top 10 pick in one season. I have no doubt that Fields (or even Baldwin) will put up huge numbers this year.
But in his pressers, he rattles off offensive players and talks at a high level about the defense. He is going to call plays on game day, which means he can't talk to the defense when they're on the sideline. He has joked that he has to remind himself to go over and watch the defense during practice. He's nailing down spectacular offensive recruits, but the defensive recruits are lagging (I realize the defensive staff turnover is playing a role in that, so that's not entirely on him). He sought out an innovator to replace him on offense (Yurcich), and a caretaker to be a DC (Mattison). Bottom line, he still seems like someone who is primarily concerned with the offense.
That sounds a lot like Riley to me. And I'm hopeful that Day's ceiling is higher than Riley because the defense shouldn't be so pathetic. So a comparison to Riley is a backhanded compliment - he's an offensive genius, but the defense is forgotten.