Dak has failed to lead the offense to more than 17 points in 4 of the last 7 games. He's 2-5 in those games.
Insert Mahomes, Wilson, or many others in those games, and Dallas would have been 7-0 or 6-1.
That's why you don't pay him a big contract. He's limited and non-impactful.
Interesting stat......here is the Dak led Dallas Cowboys record and average point differential in those lost games when Dallas scores LESS THAN 20 points in a game:
2016 1 Win 3 Losses (6 points) (Losses were -14 vs. PHI, -3 vs. NYG, and -1 vs. NYG; Win was +2 vs. MINN)
2017 2 Wins 5 Losses (20.8 points) (Losses were -9 vs. SEA, -22 vs. LAC, -28 vs. PHI, -20 vs. ATL, and -28 vs. DEN; Wins were +6 vs. PHI, and +16 vs. NYG)
2018 1 Win 5 Losses ( 10.3 points) (Losses were -23 vs. IND, -14 vs. TEN, -3 vs. WSH, -3 vs. HOU, and -11 vs. SEA; Win was +3 vs. NO)
2019 0 Wins 4 Losses ( 6.25 points) (Losses were -8 vs. PHI, -11 vs. BUF, -4 vs. NE, and -2 vs. NO)
2020 0 Wins 1 Loss (3 points) (Loss was -3 vs. LAR)
So, in just over 4 years (65 total games), the Dak led Dallas Cowboys failed to score at least 20 points in 22 games (or 33.8% of those 65 games) and of those 22 games the team record is 4 Wins and 18 Losses (a winning percentage of 18%).