Yes, Google Fi is the best for traveling outside USA. Especially if one goal is to get 2FA codes. Though the Google Fi physical SIM must be first enabled while near a USA tower, from any old borrowed phone then later inserted into your phone in Argentina. Before getting on plane or shipping from...
I have opened new google accounts, and changed my international location of google accounts while using a USA VPN server to download from the USA play store. Though I do not find it necessary to spoof IP location with the VPN to simply download an app as long as the play store (or Apple Store...