I sort of understand where the writer is coming from, do you need Algebra and Calculus to function proficiently at university? For science based academia yes, but for a lot of others sectors no.
Remember though, that the US needs more short order cooks and wait staff as well, and someone has to be able to take the fries out from the fryer too.
What other way could we successfully achieve a more level playing field, without spending more money, in the worlds economy than to dumb down the smart ones? It is too expensive to lift the world to our level.