So for my non-quantifiable opinions to be valid they have to be proven true, but you can just say something and it has to be proven false... hypocrite much!
I personally know of at least one situation where the OC had 100% control of the offense, full autonomy to move offensive players as he wanted, design/ develop the offense how he wanted, call the plays he wanted in whatever order he wanted.
So there, your hypocritical standard is met and your statement that "ALL head coaches have a say in how their offense is run" is proven false. Now eat shit and fuck off.