If everybody is connected to the internet, shouldn't the mean and median IQ be exactly 100?
Both of those things seem like fairly reasonable hypothesis to me. You are the one inserting race into it.
The blogger cites a website which cites Richard Lynn for these 'facts'. So this is about race and IQ, quod erat demonstratum.
You are misrepresenting the author. He made no such claim. He did not articulate what he believes the underlying mechanism to be.
It would be perfectly reasonable to inquire about the mechanism, or question the accuracy of the prediction. It is not reasonable to make accusatory conjectures about his beliefs.