The other thing is, and even Witten stated this when he was in the broadcast booth, is Dak needs the OC give him options on the early reads, where he can make the throws. The OC is limited by Dak.
Dak is simply not a special QB among the NFL QBs. He’d be bar none one of the best back-up QBs, a guy you can count on to win games when the franchise QB goes down, which is what the draft had him as anyways.
He did an admirable job when Romo went down, but the Giants and Ravens games that year exposed his warts as a starter clearly. Those warts remain to this day.
Yes, he’s perfected what he’s always been good at, but he’s still slow processing the field, his mechanics break down under pressure at an accelerated pace and with the injuries piling on, it will most likely get worse. His mechanics don’t even make for a long career, he lacks fluidity to his movements. He throws with his arm often.
But again, the trait that hinders him is his slow processing of the field. The reality is every offense get exposed as the season goes on to a degree and that’s where the real QBs make their money. They fire the Rocket dimes in between two defenders on a third down which break the back of the defense.