I think question really is how to transition to a more efficient State system.
Milei knows very well the expenses are still way too high. Everybody knows. The States are not solvent globally. This is why bonds are being demonetized.
This is precisely in my view why the UBI is the only way out of this. Gradually replace/convert something like 50% of the State to a UBI. That's honestly the only thing I think can work.
It's the only way out of this mess. Because if he ends the Central Bank, they basically have to cut the government in half drastically and they'll have anarchy because **the people aren't ready for that**. He can try, people will demand for solutions like in 1929.
If he channels money to a UBI directly he'll capitalize the bottom 90%, which will create more independent rational actors, like Mises envisioned. Without many independent rational actors there's no capitalism.
I wrote about this at:

Why Milei's Only Solution Will Be a UBI
UBI as the Only Way Out of the State Efficiency Crisis
I'm working on writing more about the actual numbers. And what would a transitional UBI work in Argentina. i.e how much could be paid, how a DOGE like dividend could work, etc.