I am no genius...clearly.
But, how can it not be coaching? We are producing many NFL players. Our defense is undeniably great with great talent. Conversely, with equal talent on our offense we cannot produce on the field over the course of four years. I agree there is plenty of room for execution improvement. However, if after four years the kids are not executing it must be that they aren't talented or they aren't coached well. I am certain they are talented because that's what the NFL says. So it must be coaching. It's a combination of position coaching, scheming and playcalling. Luckily, that can be addressed.