Let's really break down what Dak has done lately against good teams.
vs. Bucs 3 points
vs. 49ers 17 points (home game playoffs)
vs. Chiefs 9 points (defense only gave up 19 to Pat Mahomes)
vs. Broncos 16 points (bad example, because they weren't a good team they were 7-10, we lost)
His best wins last year were against several 9-8 teams which isn't bad but not great, barely above average teams and could not beat a team with 10 or more wins. He did put up 29 against the Bucs in a loss last year and 33 against the Raiders in a loss, those were on the defense not him.
So you can say that's nitpicking.
Yet Dak is 18-19 over his last 37 starts, and a good amount of those wins were against the East which was bad, those days are over the east is a BEAST.
Dak is better than Rush, but he is not a savior and I have high doubts he can win us a Super Bowl even with this defense.
I'd be more than happy to be proved wrong, I'd shout it from the rooftops I was wrong.
But remember before Amari and after Dez he struggled. What's he going to do now? Last time we saw him he scored 3 points. He gets the starting job back sure, but he has to play well against good teams, the best teams, or eventually we should draft another QB.
I live in Lubbock, Texas where Texas Tech plays (yep, Patrick Mahomes college). I have seen for decades them put up ungodly numbers on offense against bad teams and then not do well against good teams. It isn't impressive to me. You have to do it against the best teams.