It's important to remember that there are 3 geographical BAs and multiple economic BAs:
Geographically/Politically, there is the Autonomous City of Buenos Aires, aka Capital/CABA/what most tourists and foreigners think of when someone says Buenos Aires, think Manhattan/the 5 Boroughs in NYC. Then there's Gran Buenos Aires i.e. San Isidro, Ezeiza, etc., basically the metro Buenos Aires area, similar to say Yonkers/Westchester outside New York. Then there's the rest of the Province of Buenos Aires, which is like New York State, i.e Jamestown and Manhattan are very different despite both being in the State of New York.
Economically it's a similar story, CABA has both Puerto Madero which has a higher HDI than basically every US state, but it also has Villa 31 like 3 miles away, which is a literal slum, so it all depends on where you go. Same can be said for Gran Buenos Aires which has both La Matanza (nominative determinism in action maybe?) and Nordelta, while Provincial Buenos Aires away from the city has both millionaire farmers whose teenaged rugby sons drive their Hiluxes drunk, and land usurpers who build shanty towns out of cinderblocks and tin.
All this being said and my point is that it really depends where you go. If you're planning on living in the City of Buenos Aires, the most likely insecurity you'll encounter is uneven sidewalks and cars that don't obey traffic laws, followed by petty theft. If you move to a "country" (gated community) in Gran Buenos Aires, the biggest threat is Argentine Karens that run the HOA as if it were the Wehrmacht. If you move to rural Buenos Aires Province, your main issue is shitty roads/driving at night, and people killing your cow for steaks.
I've been living in/coming to Argentina for over a decade and provided you don't flash the cash/make yourself a target for crime, odds are you'll be safe. Remember, the City of Buenos Aires, including Villa 31, still has a lower homicide rate than basically every major US city I believe, around 3 per 100K compared to 6 and change in NYC, and I consider NYC very safe.