I think Jerry's problem is you need some idea of how the pieces fit together.
We have some good individual performers. Demarcus Ware, Sean Lee, Jason Hatcher, Spencer when healthy ect. But even if you had a solid core of 5-4 good defensive players (which ideally you would but we don't) you need to be able to fill in the other 6-7 players on your defense and make it work. We have failed badly in that capacity not just this year but for four years and counting.
So in some sense I agree with you it's Jerry's fault. But in another sense I don't think it's a problem of drafting. Drafting matters for the 4-5 core guys and we have had some outstanding individual performers. The other 6-7 have been the biggest problem in my opinion.