I mostly agree with you, though describing Musk as "the world's most dynamic business man" is a bit much, considering how he's destroyed value at Xitter, and possibly sunk Tesla with his cybertruck.
But there needs to be a lot of follow through to attract investment. And a lot more than just one high profile meeting. So far I'm not seeing this commitment to hard work from this government. If Milei wants Argentina to be like Ireland he needs to study the IDA (formed in 1949, these things take time and effort). Is Musk actually going to invest in Argentina? Or is he just inviting others to do so?