they have a system of political appointees as bureaucrats over and above elected officials. in some counties even police chiefs and judges are elected by vote. because civilians with political leanings are handling top bureaucratic positions , there needs to be a legislative oversight to keep them in check.
in our case, we follow british system where there are a dedicated cadre of bureaucracy to handle executive affairs, and we have very few political appointments that too as advisors to govt like NSA, CEA.
but it is mostly political theatre, mostly virtue signalling to their base. both questions and answers are framed in such a manner.
we too have parliamentary committees to review the work of the govt, just that they are not televised. and ministers are made accountable in parliament.