The Techcrunch article is just outright racism and elitism, dressed up in business-speak. If written in 1930, it would probably lament on the "white mans burden" and how our averages are dragged down by those wretches in society who just cannot move forward.
There was a time when the children of european peasants could get a great education in an urban school, go to well-regarded public colleges for little or no money, and do great things. That's why NYC is a great city today.
There's certainly some proto-racist implied nationalism (of the bad kind) in saying that the USA can avoid having to educate its own children by exploiting a continual flow of immigrants.
Racist Point 1: Americans do not really matter to America. In fact, the American populace mainly exists to supply America with peasants and servants (as in: workers in service jobs), not serious value-creators who receive good compensation.
Racist Point 2: Foreigners all love America and want to come to America and form its elite. The notion that non-Americans might prefer to live in their own countries, or that there's a point to their existence other than immigrating and forming the American elite, does not occur.
There was a time when the children of european peasants could get a great education in an urban school, go to well-regarded public colleges for little or no money, and do great things. That's why NYC is a great city today.