These days, perhaps it is even less of a problem. Kids might only care about how many zeros are beyond the proposal, when the coach comes to visit.
And it's not like the head coach is actually going to be coaching your position group. Or in the case of Whittingham, I believe, even calling the plays on the defense or offense.
Honestly (and this is largely my bias/slant towards the NFL, where several head coaches are also playcallers), I don't know if I get the point of a head coach who doesn't also call the plays on one side of the ball. Like, what do you do all day? Put out fires? Chase donors? (In Moore's case, chase skirts)