Well there's the rub, I think part of our issues running is the play calling based on our QB's limitations that allows DCs to scheme and stop our run. Part of it the blocking scheme, part is the running plays called, part of it is what throws our HC trusts our QB to make, part of it is our OL performance, part of it is our RBs, part of it is what throws our QB is comfortable making, part of it is what throws our QB is "allowed" to make by the HC/OC, part of it is the QB's ability to read the defense, part of it is a lack of a truly mobile QB, part of it is our QB's comfort in calling audibles (or potential the HC's limitations placed on the QB's ability to audible), and part on the HC/OC's adjustment to the DCs game plan based on all these factors.
It's normal for people to want a simple answer to complex issues. To point to a single aspect and say this is why or this is why not.
When you do so, it never really allows for discussion of the complex nuance that is any complex topic and a football offense is a complex topic that can't be boiled down to simply Quinn sucks, our running game sucks our RBs suck or our OL sucks. None of those are correct in and of themselves. It's a combination of factors.