I remember a young Jim Plunkett/Troy Aikman/Matthew Stafford getting the crap beaten out of then and they didn't become gunshy. Excuses are many, I do realize Caley is running a vanilla offense, ask yourself why would he willingly choose to run a vanilla offense.
The problem is more than Caley, just as it was more than Slowik, just as it will be more than the next OC that's hired after Caley.