Fascism and idiots - I couldn't name a more iconic duo - though I do agree with you point... Trump is exceptionally stupid, and has surrounded himself with gibbering idiots like Musk and RFK.
...that said, when Trump's heart inevitably explodes, Vance will almost certainly have competent (evil) advisors, and they'll get (horrible) shit done.
As an example, the IRS returns $6 for every dollar spent on it, and absolutely all available evidence shows that if you remove all the guardrails, things get far worse almost immediately.
Can you point to an example of fascism working? Every example I've seen ended with massive decline in quality of life, rampant waste, and both economic and government collapse - usually with a dead leader through suicide or execution, generally with their corpse being dragged through the streets by an understandably furious populace. It'll all work out this time, though... right?