Almost everyone is under (the folk version of) the Dunning-Kruger effect about the Dunning-Kruger effect.
Since you linked Wikipedia, I'll quote it.
> Nevertheless, low performers' self-assessment is lower than that of high performers.
> Among laypeople, the Dunning–Kruger effect is often misunderstood as the claim that people with low intelligence are more confident in their knowledge and skills than people with high intelligence.
Since you linked Wikipedia, I'll quote it.
> Nevertheless, low performers' self-assessment is lower than that of high performers.
> Among laypeople, the Dunning–Kruger effect is often misunderstood as the claim that people with low intelligence are more confident in their knowledge and skills than people with high intelligence.