/argentina/ is /b/ for the Platine basin. Once the foremost Hispanophone board, Chileans in /choroy/ have overtaken it and are now 6 to 7 times larger. There used to be several Anglophone boards as "recommended boards", but now the only other boards advertised are two satellites: /uba/ for university students and /cybar/ for tech and cyberpunk aesthetics. Several other Hispanophone boards are also likely populated by Argentines. /argentina/ has been on 8chan for a long time and I can find no trace of the userbase's previous location, so for all intents and purposes it's an "autochtonous" community. By contrast, /choroy/ seems to have been populated recently by a large migration from some site called nido.org. A small population of foreigners -Americans, Dutch, Brazilians, Italians and Uruguayans, though the last aren't true foreigners- sometimes appears.

Default user name is "Barón" (apparently some Internet celebrity or namefag) and used to be "Feminista en el fandom", but regulars call each other "choris".
I thought "Observatorio del INADI" was a reference to surveillance from an intelligence agency, but INADI is actually the National Institute Against Discrimination, Xenophobia and Racism. A few other details single out /argentina/'s aesthetics.

Choris are quite similar to their counterparts in anglophone boards. They make a lot of threads about how they've lost in life, can't socialize, can't get a gf, can't make a decent living, feel sad and so on. Many are weebs. Disagreements in threads are common.
There's an above average interest in food, Flat Earth and Varg Vikernes. The latest Flat Earth thread features a Hollow Earther, proofs of ties between a famous Third Positionist movement and Flat Earthers and some random poet being a Flat Earther.

There's a lot of political discussion. Choris were once enthusiastic about Macri but now despise him. They also hate Kirchner. Some follow offshoots of Péronism while others are less populist, and they have no consensus on who to vote in the next elections. There's a consensus in favor of private firearm ownership. They feel desolate about the state of Argentine society. Bolivian immigration is a major concern.

There's also a thread complaining about Argentines being portrayed as blacks in some anime. And another one criticizing therapists.