If I remember correctly, the Central Bank of Argentina was disbanded by Milei, right? So that means this must be a new one.
No. You may have confused it with the tax agency AFIP, which was dissolved, but I would speak more of a "renaming" and the removal of some middle management, because after the "dissolution" they do approximately the same thing than before, only with slightly less people.
Milei promised to close the Central Bank in his early presidential campaign in 2023, but later he softened his position a bit (as people pointed out that even countries without an own currency, like Ecuador, have a Central Bank), instead insisting in that the department of the Central Bank which "prints money" should be dissolved. This has still not occurred, however the emission rate of Argentine Pesos has been lowered drastically.
@d5000, if my memory serves me right, Milei chose the USA for his first visit after becoming president - and it's no secret that they don't (or at least didn't) have a good opinion of BTC as a currency, although they don't mind it as an investment.
Yes, he visited the US. But just Trump (even if I don't like him btw) did insist a bit with the "Bitcoin as a currency" idea, for example when he proposed to remove capital gains taxes on (some) cryptos, including Bitcoin, in October, and instead treat them as currencies.
It has to be seen if Milei can convert into an influential figure in Latin America, and I think it depends on his success on improving the economic structure in general in Argentina. Many countries in the region have currently center-left governments (Mexico, Brazil, Chile). It is possible that they may shift if Milei is really successful, but it's too early to judge. He has only been able to reduce inflation but it's still annualized about 40-50%, and at the cost of a recession. The real challenge is if the inflation can be lowered further (40% annually is still one of the highest figures in the world, and Argentina between 2002 and 2018 never reached this value) even if the economy starts to grow again. If instead the country stays in a depression or inflation stagnates at the current values, I don't think he'll be influential at all.