I bet Bill was fine with how the defense played, the lack of pass rush was largely intentional and they appear fine with letting Geno look reasonably competent. Rex also pulls about 7 rabbits out of his hat for Patriots games which plays against NE's approach. Even a terrible team is going to have success against the Patriots if they are willing to run plays they haven't all years.
I think you are correct about the offense, though. I think that is the biggest reason why most key offensive players start.