Actually Scott Linehan was a genius (yes I hated him) when it comes to dak.
Scott immediately saw Daks weaknesses and designed a mobile offense that Dak could flourish in.
problem being Linehan and KM are pocket quarterback guys.
they've been trying to put Dak in the pocket ever since 2016.
he can't do it. teams have slowly figured that out, he's inaccurate and below average arm. They play with the corners off, safeties up take away the middle and try to force him to throw outside.
He can't/won't do it. He can't throw into a crowded middle either, there's the problem.
Either move him out of the pocket and start doing the same rpo, roll out, boot leg stuff you did in 2016, otherwise hes done. Rush is a better pocket quarterback than Dak. His arm is no stronger, but just accurate enough to hit the intermediate middle which Dak won't throw.
Give Dak a chance, move him around, or you'll have a instant QB controversy on you're hands and Dak will be out of the NFL
Bank it.