Easier solution: You can get YouTube Premium for $2 a month if you just happen to be in Argentinia while you sign up, even if you are using a US credit card to pay.
Nah. I’m old enough that i don’t care about playing the “catch the mouse” game with all the various ways to borderline-legally pay less (and maybe get your account flagged and suspended - good luck appealing to that).
I’ll just block ads, alphabet is doing fine anyway.
You can use a separate Google account with a separate email address for that. Using Apple Pay or similar, your payment also remains anonymous. And if you don’t care about history etc., you can switch to a new account every year or so.