I'd like to point out this is propaganda. The only source is actually a report[1] from January this year, that's where the line, "Buenos Aires saw a doubling of available rental units, and rental prices have stabilized" comes from. It took me a lot of time to find it a month or so ago when the Libertarians on Reddit were running victory laps after it got picked up by AR15.com's forum[2] early August.

[1] https://www.eleconomista.es/economia/noticias/12935188/08/24...

[2] https://www.ar15.com/forums/General/Milei-ends-rent-control-...