Ok, Dak may not be the answer, but his completion percentage is higher than Brady, Rodgers, Mahomes, and right there with Drew Brees, considered one of the most accurate passers ever. Many of those passer's numbers got better as they got older, so it is possible Dak's completion percentage ends up considerably higher than all of them. His YPA is higher than Brady's and right there with Rodgers and I would guess Dak gets much less of his yardage from RAC than either of them so it is really hard to point at him being inaccurate.
You can argue that he isn't clutch and have a better chance of proving your theory.
Also, you do know that Dak didn't call that play at the end of the game, right? That came from wonder boy Moore.