It probably isn't all Wilson's fault. He was enabled.
Remember the stories when the LOB was here about how they were not allowed to trash talk him?
Pete coddled him. And Wilson started to believe some of the crap he was being fed.
That made him weak and soft. This sucks because Wilson is or was, tremendously tough mentally.
His greatest strength was that under pressure he got better not worse. A tremendous attribute and incredibly rare.
What did we do?
Take all the pressure we could off him.
Now he can barely play under pressure because he is scared to take chances. And so, when he does they are often stupid chances.
Wilson has agency. Not saying he is blameless. But Pete created this monster that turned Wilson weak and gutless. He was once fearless, relentless, and driven.
And there is no shame in not being a top 2 or 3 QB. You can still win despite that. But clinging to the delusion that you can do it all means you plan for nothing else. And without any game plan or any preparation, we were then screwed.
I think Wilson's chance of ever getting a single MVP vote just died though. As did much of his legacy. A lot more credit will be given to the LOB (+ the rest of that Defense) and Lynch now, likely rightfully so.