Fit my narrative? What the hell did you just do? You guys are all the same: blame everyone but Dak for his crap play.
Dallas Cowboys defense average points given up by year:
2016: 19.125
2017: 20.75
2018: 20.25
2019: 20.06
2020: 29.26
2021: 22.08
So, outside of the 2020 season (in which Dak only played 4-1/2 games), the Dallas defense has been averaging at, just below, or just above 20 points/game average every season Dak has been the QB.
Furthermore, here are the number of games by season that the Dallas defense has given up more than 21 points in a game in which Dak played and Dak's record in those games:
2016: 5 games (4-1) (defense gave up an average of 25.8 points in these games)
2017: 6 games (0-6) (defense gave up an average of 34 points in these games)
2018: 7 games (4-3) (defense gave up an average of 25.7 points in these games)
2019: 6 games (1-5) (defense gave up an average of 28.3 points in these games)
2020: 4 games (2-2) (defense gave up an average of 40 points in these games)
2021: 5 games (2-3) (defense gave up an average of 30.1 points in these games)
Combined record: 12-20 .375 winning %
Lastly, here are the amount of games per season that the Dallas defense has given up less than 21 points in a game in which Dak played and Dak's record in those games:
2016: 10 games (8-2)
2017: 9 games (9-0)
2018: 9 games (6-3)
2019: 8 games (5-3)
2020: 1 game (0-1)
2021: 6 games (5-1)
Combined record: 33-10 .767 winning %
The point? In games that Dak has been the QB, there are more games in which the defense has given up less than 21 points than there have been where they gave up more than 21 points......and in the 10 games that Dak lost in which the defense has given up less than 21 points, the offense has averaged 12.1 points per game.....so even when the defense is playing well (as you say is constantly needed) Dak manages to lose those games.