Which is to say: he makes an outlandish claim in the title, in order to get us to read what he has to say; then meekly backpeddles away from that claim in the body of the article.

Generally the editor writes the title. Regardless, the title isn't very controversial; "superintelligence" isn't well defined and it's certainly possible we could have humans with greater than genius IQ. It was the "1,000 IQ" claim that isn't certain, since it's just a simple extrapolation we don't really know how all of those genes would interact.