Catholicism in Argentina is a complicated thing, lots of factions and strange alliances that need decades, centuries, of context to get, so I won't even try. (It is key, though, to understanding the current Vatican resident.) It's a very resource-rich country that has done nothing but self-sabotage for generations. Inflation is out of control again and people are fed up with official corruption, thus we have Milei for his economics at least, his wacky and often un-Catholic mix of social stances notwithstanding. And Argentines do love a firebrand. 

Here (5:20), Milei measured and thoughtful, anti-central banks, anti-crime, anti-Lula, anti-CCP...and pro-Israel. (Subtitles are accurate.)



And here (3:14), Milei florid over leftards. (Profanity in the subtitles, though the translation barely conveys the porteño-isms).



And here, an alternate take from The Spectator, which notes that the angry smart kids are calling Milei the Last Punk. In the end he may be no more than Italy's Beppe Grillo and the Five Star Movement from a decade ago. (Who? What? Exactly.)

Pop-punk ditty here for those who understand Spanish:

Milei is not Catholic and he is not going to reverse the moral and spiritual dissolution of Argentina, but he is against abortion.

If you know Spanish, you should watch this video where an Argentine priest, Javier Olivera Ravasi, analyzes Milei:




Said that, Argentina has huge problems of bureaucracy and administrative and government corruption, it's necessary someone like Milei a few years to clean this.