I said I wasn't pushing the blame off of the front office.
My point was that if the defensive scheme/coordinators need or are requesting certain types, sizes, etc. of player, it would futher limit who the team could draft, which means BPA for those positions based on the requirements may have pushed the Cowboys to draft a lower ranked player simply because he was the BPA that fit the requirements.
I agree, the front office makes the final decision, but if you have a defensive system that focuses on speed, you are not drafting a slow and heavy lineman even if he's ranked higher than the faster BPA.
The front office, ultimately the Jones family, approved the coordinator hire so it's still on them.