The general argument is "X has this impact on Y" (in this case, Internet and US). Given that X is global, that the Internet impacts many countries, a reasonable perspective would involve at least looking at how X impacted A, B, and C, which might prove that the impact is merely correlation in the time, not causation. Or it might strengthen the argument.

But in its current form it's a universal claim backed by very limited evidence (and ignoring evidence that suggests other causes than the Internet).