Venezuelans who got to Argentina were not the poor ones, the price for bus travel through Colombia, Ecuador, Peru, and Chile to here was about $500 one-way, plus they needed to show $500 in cash to enter Chile. The "walkers" got as far as Colombia and Ecuador.
Argentina has been very welcoming to Venezuelans, both at the official level (strictly speaking, Venezuelans shouldn't get the Mercosur visa), and also at a personal level, with very little resentment among Argentinians. And Argentina has also made it easy for them to get citizenship. Many of them are very overqualified for whatever work they do here, whether it's Uber, fitness trainers, massage therapists, call centre workers or whatever, quite often they're engineers, lawyers, and teachers.
I don't really know why the Venezuelan mafias like the "Tren de Aragua" aren't present in Argentina, maybe with the unending economic crises here it's just now attractive for them. Whatever the reason, I'm very grateful that we don't have a situation like in Chile with those mafias, resentment, and sporadic murders of immigrants.