Tom Brady is the only QB in NFL history with a winning record when attempting 50 or more passes.
Every other QB in NFL history has a losing record when the # of pass attempts gets that high. Peyton Manning, Aaron Rodgers, Drew Brees, all lose most of the time when they throw a lot. Obviously old guys played in an era where nobody would attempt that, but even with lax rules on passing in the modern era going 100% to the air is a loser's play.
Even if you think Dak is good or even great, if the team puts Dak in that situation it means they've comprehensively failed, because that's true for everybody ever except Brady himself.
The fact that he "only" attempted exactly 49 passes in each of the last two games doesn't change the basic point.