The Committees exist to provide oversight over delivery.It does seem to be a case of government foot in government mouth.
From the perspective of delivering projects, committees are a PITA, but that's their function. If you can't put a robust and well drafted piece of legislation, etc, in front of a committee and demonstrate it as such, it's going to be an even bigger fuster cluck when the legislation is enacted.
However, the Government approach to delivery appears to be driven by Cummings' disdain for the elected MPs and loathing of the Civil Service, and relies on some weird synthesis of physics led data management and think tank driven contracting out.
If the Committee couldn't be a neutered rubber stamp body under Grayling, the instinct in Number 10 seems to be that it was an adversary to be defeated.