tl;dr for those who didn't read: they looked at genes (SNP's really) instead of "race" and found... a 7-10% correlation with cognitive performance (that is, 7-10% of the difference in individuals scores is determined by the differences in the genome subset studied).

Yet you look at "race" (a social construct that itself correlates at best with about 50% actual genetics) and see a much larger effect. That by itself should immediately put this "black people are dumb" notion to bed (i.e. even if it's measuring something, it's clearly not measuring heritable diferences!). But instead everyone just doubles down on the nonsense, because the science is "polluted by cancel culture" or whatever.

And that's what this opinion piece is. It's an attempt by the political right (the Journal's editorial page is increasingly skewed these days -- most papers at least pretend to have a diversity of viewpoints) to explain away the science they don't want to be true by attacking "science" as a field.