They have a party, other than that they are just guys making it up as they go, wasting time talking about their personal wishes and fantasies.
I never heard of Milei until he won this election. When I hear the word “libertarian” (small-l), I think of Rand Paul and Ron Paul. I agree with small-l-libertarians on fiscal policy and the proper role of government. However, over the past 15 years or so, the capital-L’s took their party in a different direction.
Milei sounds more like a capital-L. According to Wikipedia, he’s made some interesting comments about “free love” and his participation in “threesomes.” I wouldn’t want someone like him for president. If he’d run for office here, he wouldn’t have gotten my vote, but it will be interesting to see where his small-l fiscal policies take Argentina.