Eh, oligarchs are already in positions of significant power. If you're talking about Elon, then to be accurate, he is not managing the federal workforce, but rather overseeing an audit of it. He himself has no executive powers. Those reside in the elected official (the President). It is also the case that most of the federal workforce is already managed by unelected officials but they are accountable to the President (elected by the people). The problem becomes when the President's assigned administrators are met with widespread #resistance from federal career civil servants who choose to ignore the will of the majority, embodied in the person of the President.
This will all make more sense when you incorporate the concept of "lawfare" into your framework. Laws at this level are very often used as political tools. The courts are not immune to practicing lawfare, either.
The current administration is reducing graft and corruption of necessity because they are breaking up established patronage networks (NED, USAID) and Tammany Hall-style vote harvesting progams (welfare, immigration policy, voter id) that rely on graft and corruption to function. If you understand networks as political weapons then these acts can be understood as disarming your political opponents.
This will all make more sense when you incorporate the concept of "lawfare" into your framework. Laws at this level are very often used as political tools. The courts are not immune to practicing lawfare, either.
The current administration is reducing graft and corruption of necessity because they are breaking up established patronage networks (NED, USAID) and Tammany Hall-style vote harvesting progams (welfare, immigration policy, voter id) that rely on graft and corruption to function. If you understand networks as political weapons then these acts can be understood as disarming your political opponents.