I don't know, maybe its a little of both when it comes to personnel vs coaching. I do know the personnel is lacking. The receivers lack the ability to get open with any kind of consistency. They also have inconsistent hands. They don't really go after the ball all the well.
We know the issues with the line. They seem to get beat by the guy lining up in front of them. Left tackle is an important position and Robinson isn't improving there. If he keeps it up he'll be creeping up on bust territory. Its looking like the light is finally going on in Austin's head. But he're really just a gimmick player. He'll never be that receiver that lines up, runs a good route and goes after the ball to get the first down and move the chains.
And the most important position of all, the quarterback, has been an epic fail. No need to rehash how bad Foles has been. We all know about that.
So looking at all of that you can say we definitely have personnel issues on offense. But can you really blame the players? Its possible they're playing as well as they're capable of playing. They're just not good enough. And that is on Fisher/Snead. They traded up for a guy who will never be a number one type receiver. Yeah, he's exciting and can be explosive. But again, he's a gimmick guy. He has his limitations.
They used a number two overall on a guy who may never be more than a JAG. And that would be an improvement over where he's at now. They signed a tight end to a big contract and he's been the most inconsistent receiver they have.
On offense they failed to properly evaluate the talent level of these guys. I have to wonder if they're even capable of evaluating offensive talent. So far no one has even approached pro bowl level except Gurley. And he's not superman. Defenses will commit as many guys as it takes to stop him and our QB can take advantage of that.
So when its all said and done, I blame the people who drafted/signed these players. They did a poor job of evaluating the talent they acquired. Is it the players' fault their not as good as the guys they face? it may not be a matter of working hard or giving it their all. They're just not good enough.