You can't have oversight unless you have expertise in the area you oversee.
You can't have oversight unless the overseers can impose immediate consequences upon the overseen.
Without these you are nothing but a spectator.
One aspect of the Dilbert-universe the pointy-haired boss who has no expertise, yet he imposes immediate consequences upon the overseen. In contrast, if we are calling for management that does (understand) code, we are calling for management that have expertise.
This begs the question: who would be able to oversee the agencies with expertise, ever?