Yeah, in Argentina the main digital wallet is MercadoPago. Many merchants have their terminal to accept payments with credit cards/QR, and since this past summer you have the option to accept payments with Pix too.
Also it goes both ways, everyone going on vacation to Brazil can pay with MercadoPago without having to install Pix.
I was so hooked to his videos a couple years ago... he was making real progress to what was his 2nd iteration of the marble machine, then he suddenly decided he had to start from scratch and got into some crypto/web3.0 thing.