Great, now tumblr teens are going to interpret that as an attack and use "Latinx" extra hard, thus eventually cementing it in the vernacular. Great job, SHS.

Also, absolutely chortling at her using a conservative (in terms of prescriptive vs proscriptive, not in terms of politics) language institute in Madrid to back up her argument. About Latin American Spanish vernacular, specifically regarding a word used to refer to people from Latin America, as opposed to "Hispanic", which refers to anyone from a Spanish-speaking country.

The Spanish spoken in Spain is different from the Spanish spoken in The Americas! Every high school Spanish student learns this!