This is more of a personal campaign of mine, so I don't know if I've managed to convince anyone on this point.
However, I did enjoy this article from yesterday.
Anytime Brian Robiskie mentioned a college team that ran the spread offense during his recruiting process, he'd get a lukewarm, sometimes dismissive response from his father.
Terry Robiskie, who has spent 27 years in the NFL coaching receivers and coordinating offenses, eventually broke it down for his son. He told him spread offenses are "pretty and often productive," but stressed that playing in one would likely stunt his development as a receiver and ultimately hurt his chances of succeeding in the NFL.
But don't just take the word of the umpteenth anonymous NFL scout disparaging Tim Tebow in that article.
Texas Tech’s Graham Harrell rarely went under center as a Red Raider. And most college quarterbacks these days are in the shotgun more often than not. So it’s difficult to see on tape if the quarterback can relocate his receivers after turning his back to the ball, or how his footwork is, or how he carries out play-action.
Then, there’s the fact that, as Mayock says, "a huge predominance of throws are 0-11 yards" in these systems.
"The concepts are the same, you’re doing them out of different formations, different sets, different players," says Harrell. "Taking snaps from under center, taking drops, throwing off of drops, that’s something you have to get used to."