The experimenter was too stupid to properly repeat Dunning and Kruger's steps, but also too stupid to realize they fucked up.
The basic finding is that, roughly speaking, the bottom 2/3 are overconfident, and the top 1/3 are less confident than warranted. This is obviously true. If science says this is wrong, then too bad for science. Maybe work out if eggs are cancer-fighting or cancer-causing, and then perhaps you'll have the credibility to challenge the obvious on this issue.