Article claims Dunning-Kruger is present in a population where everyone estimates their own skills based on dice rolls. Someone who estimates their own skills b

Article claims Dunning-Kruger is present in a population where everyone estimates their own skills based on dice rolls. Someone who estimates their own skills based on a dice roll is objectively crap at estimating their own skills. Dunning-Kruger claims people are objectively crap at estimating their own skills. Where is the contradiction?