I believe your interpretation of the Dunning-Kruger effect is slightly wrong. The effect is not that the least skilled estimate their skill to be above average

I believe your interpretation of the Dunning-Kruger effect is slightly wrong. The effect is not that the least skilled estimate their skill to be above average. The effect is that the least skilled tend to overestimate their skill level greater than those with higher skill levels. Also, those at the highest tend to overestimate the least (and indeed often times underestimate).