Isn't that what any other payment system and most of the banks around the world are - a foreign company with billions of dollars in charge of payment system in a country.

VISA, Mastercard, HSBC, UnionPay, ICBC, Santander... Or is this all Brazilian technology?

The difference is that Meta is privacy data hoarder, not that it's a foreign company. And it's not "in charge of countries payment system", because that's pretty-much impossible, but "one of the payment systems in the country".