The original idea wasn't vacuous. The researchers who coined the term, particularly Spearman, honestly thought they had found statistical evidence for a single common factor that could be called "intelligence." But I thought that had all been thoroughly exploded by the 1950s.
There was a guy way back in the 1960s who worked out a sort of abstract block diagram, 6 by 6 by 6, of 216 different "thingies" that represented some aspect of intellectual performance. What was it called? "Structure of Intellect." Google, click click, J. P. Guilford. So he spent a chunk of his career devising psychological tests that ought to detect each of those 216 intellectual abilities and then doing the correlations to show that each of the tests was really, truly measuring something different from the others. When I encountered his stuff, he had successfully demonstrated the existence of about 150 of those 216 skill or talents. In other words, intelligence isn't one thing, it's at least 150 different, independent, things.
And that was in the 1960s. I'd have hoped that by now IQ was lost and gone forever, dreadful sorry, Spearman. Whatever was keeping it alive? Racism? The standardized testing industry?
I don't quite see how this goes much beyond what was known a half-century ago, though it's helpful to see it confirmed. But if the officials want to test intelligence, they will just go on testing intelligence, whatever the science says.