spitballing here, but I believe uptempo benefits are two-fold specific to our offense.
I don't think dissecting defenses ala Brady is Dak's forte. Uptempo gives defenses less time to shift/move around and, therefore, Dak is spending less time getting overwhelmed/confused/misread with all the information defense would've been showing that Dak has to process. Ultimately, more decisive. Secondly, with Pro Bowl skill at each offensive skill position, defense is scrambling to play whack-a-mole and figure out assignments to ensure every one of our skill players is accounted for. Less time for defense to decipher our tendencies based on our formations and where the ball is going.