Well, we are a little surprise here because its not the first time someone of North America did a jorunalistic note about this, like argentinian i have to say this:
1) I lived in 5 diferents cities in my life and NEVER meet or even listen about a black argentinian, with the time i presume i will meet someone.
2) When you see a black person here, you have 3 options: 1) they are inmigrants from Senegal, 2) from another country of Latin America, 3) if they are male and tall, VERY probably they are american basketball players.
3) The first time i see a black person (in person) was when i travelled to Rio Of Janerio in 1997, the same for all my family except mi father.
4) According the journalist, is like an obligation to have black players in your national team, it doesnt matter their level.
5) It is fair to say that all the historical information she mention about Argentina is true but, strangely, she answers herself: the reason for there arent a black players in Argentina is basically for "whatever reasons" there arent black argentinians, or at least they are less than 1% of the population, in a country which the football is clear the most popular sport.
P.D: what woke you have to be to make an ethnic investigation of a country because you dont see players from some ethnicity
P.D 2: For this mentality in some west countries, i asked about the existance or dont of "ethnic quota" in national teams i only receipt agresive answers, here the racism is not a big problem but it is in another countries.