"Cultural" explanations of racial inequality are full of ways to be racist (that is, logically requiring racial essentialism for their coherence; here I think the Loury-Usmani debate especially clarifying).

I think one way cultural explanations can be racist that I did not address in the piece is when there is ample evidence that the causal chain of culture > behavior > economic inequality is a bust, or that the argument that culture floats free from inherited inequality is completely unprovable, but people keep pursuing "culture" as the explanation for Black-White economic inequality. This strongly indicates that the dogmatic belief that Black people are at fault for their own economic position is what drives one's conclusions, not the actual findings of research.