OP is partially right though. How do you not make multiple deep playoffs runs with arguably the best MLB of all time and one of the most unique and dominant QBs of his time? To me the answer is Ron Rivera. He simply wasn't good enough and didn't make the right moves with Cam until it was too late.
Efforts were made in the draft to "try" to address our needs, but a lot of those picks flopped. And the FO was not nearly aggressive enough in replacing Jordan Gross, and they were far too complacent with Olsen as our best pass catcher until we got DJ Moore.