Absolutely, let's throw out Article 1 of the Constitution and all of the representatives elected by voters, and let's give the power of the purse to an unelected unconfirmed oligarch who hasn't even provided a financial disclosure required by many civil servants. Excellent idea. What could possibly go wrong?you want the people who are causing waste to review/approve cuts to the waste? ridiculous.
Democracy and separation of powers is hard. It requires compromise and coordination between branches of government. Authoritarianism is easy because you only have to make one person happy.
Just remember, it's a double edged sword. Some day there will be a President with an agenda you don't like, and you will be begging for checks and balances between the three branches of government.