Genetic links to "intelligence" always struck me as a hollow concept anyways. Really, it's a genetic association for doing slightly better on a handful of tests where you match patterns or pick words out of a list. The links between those types of tests and anything else people would associate with "intelligence"--good decision making, creative problem solving, professional success, interest in research, etc.--have always come across as incredibly dubious to me. Not in the least because social factors so heavily skew both performance on those tests and any of those other indicators of "intelligence". Is a gene actually associated with the nebulous concept of "intelligence", or with the closed-off social strata that have better access to schooling and more time on their hands to participate in research, or perhaps with the lack of various health conditions that would make someone less focused during a long battery of cognitive tests?
There may well be some confounding and self-selection with that particular finding, but more likely explained by those other factors rather than any concept of "intelligence."