I don't get the point they're trying to make. I think the analogy between math and a language that you can learn as "native language" is quite far-fetched and

I don't get the point they're trying to make. I think the analogy between math and a language that you can learn as "native language" is quite far-fetched and flawed, but let's accept it for the sake of argument. Then, I'd say that in most developed societies, we already learn math as a native language since birth. Many toys for babies are focused on counting (among other skills, like recognizing colors, shapes and basic words). Parents routinely ask their kids to count things, just as they help them learn the language. Then, once you go to preschool and then school, there are always math lessons alongside the language lessons. So in my view, what they're advocating already happens, so I'm not sure what change they're proposing.