The problem with Milei is the same problem with most Latin American and Spanish "libertarians".
Which is that they come from fascist-adjacent corners of the political spectrum, with a very strong religious fundamentalist background.
Milei has many quotes in which he is cozy with and shows sympathy for the fascist military regimes in Argentina, Chile, Spain, etc., and unmistakably pro-Church public policy positions, i.e., antiliberal social policies.
It's the same phenomenon that makes "liberals" in Spain right now vote for a neatly and even proudly ultranationalist, openly fascist party called Vox.
These are "libertarians" who are only interested in being free to oppress minorities and those who don't think like they do, and to impose their religious and social fixations on everybody. In other words, low taxation fascists. nostr:note1e6vczz86ntptyvp86x7pm6sq4xzewqtscf0fn7szkethesmh29lq5wpw08