a very interesting article.

and to yer point, zn.....I'm not so sure that all the failures of spread QBs since 2000 was NOT the quality of OC coaches.
Only cuz I think much of how the NFL operates is group-think. imo
Look at our military or any big organizations and often they go with what kinda worked in the past...more is more!
I'm just musing here...just speculatin....got no facts...just gut/observation for my opinion(the AmericanWay! lol).

I'm kinda a novice military historian...and it comes down to STRATEGY/game-plan(generals/coaches) and TACTICS/execution(soldiers/players).
Right place, right time with the right people and the right place...makes for successes. But football as in warfare...no plan survives the first shot...and adaptation/thinking outside the box & evolving design, when necessary...is where my bet would go. The generals strategy...matters.
Martz was a huge student of military history(CivilWar especially from what I read) and he often used those concepts in his offense(Art of War/SunTzu stuff, etc) to great effect tho everyone/general/coach has their blindspot.

This is not really a post countering yers, I think...just a supplemental comment on yer thots.

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"L'audace, l'audace. Toujours l'audace!"