Of course the QB has to do his job i.e. throwing the ball, recognizing defenses, improvising on certain plays, etc. However, Im just saying people here are too critical on Dak not being able to perform without a good oline and a top-notch runningback. But this also applies to just about every QB.
Maholmes is well coached. He has an oline that pass protects possibly even better than our line. He was given better selection of plays that revolve our his skillset. He has better receivers and a pass catching TE. Yes some of those bootlegs are designed too and not everything is Malholmes improvising.
Dak is nowhere near as good as Malholmes. As for passing offense, Malholmes support system is better. Better coaching, better receivers and TE, better plays, etc. So I think its unfair just to say that Dak is succeeding because he has a better oline and a top 5 running.
Football is a team sport. A QB needs a good support team as much as he needs to be a skillful QB. Most here would agree.