I don't think that article says what you think it says. The D-K effect is: "The Dunning-Kruger effect is defined as the tendency of people with low ability in

I don't think that article says what you think it says. The D-K effect is: "The Dunning-Kruger effect is defined as the tendency of people with low ability in a specific area to give overly positive assessments of this ability." That is exactly what the parent described, and is an empirically identified behavior. The criticisms are aimed mostly at the "meta-cognitive" and bias-based explanations for the behavior.