The QB's ability is a reflection of the coaches.
The penalties are reflection of the coaches.
Execution is a reflection of the coaches.
I have yet to see consistent pass play calling that has gotten guys open more than a flat route.
The team reflects the coaches ability to coach, pregame, scout, etc.
IMHO.
Say we translate this same exact reasoning to teaching ....
The teacher (or coach) IS responsible for creating an excellent learning environment.
The teacher (or coach) IS responsible for creating assessment/evaluation strategies to discern if pupils are "learning" the material
The teacher (or coach) IS responsible for keeping up-to-date in their field ... and implementing innovations when it enhances the learning of their pupils.
The teacher (or coach) IS responsible for ensuring that the appropriate resources are available so that their pupils can empower themselves.
When you get to college though ... there IS also the expectation that the pupil starts taking an increasing amount of responsibility for themselves.
Specifically, ...
The pupil (or player) IS responsible for keeping on task, being organized, and having good study skills. [in the context of football ... this relates to BOTH drilling fundamentals on their own time AND doing film-study]
The pupil (or player) IS responsible for being detail oriented
The pupil (or player) IS responsible for putting in all the requisite work
The pupil (or player) IS responsible for remaining adequately motivated and invested
You can be the best teacher (or coach) in the world ... but that doesn't guarantee the success of all the players. Furthermore, in a team sport like football ... you're only as good as your weakest link.
So while good play by a team can be a reflection of the coaches ... it's ALSO a reflection of hard work and determination of the players themselves. A teacher (or coach) CANNOT make a student (or player) learn (or improve). Ultimately, the student (or player) is still responsible for themselves.
Similarly, the bad play of a team CAN be a reflection of the culpability of the coaches ... however, it can ALSO be a reflection of poor focus and/or execution by the players!