First, this article is from 2017. Second, it does not accurately describe the Dunning-Kruger effect. Yes, people who are less skilled in an area over-estimate

First, this article is from 2017. Second, it does not accurately describe the Dunning-Kruger effect. Yes, people who are less skilled in an area over-estimate their level of skill and those who are more skilled tend to under-estimate. But the less skilled don't necessarily think they're better than the more skilled. Basically, if your skill is a 5, you might think you're actually a 10. And if your skill is a 20, you might think you're an 18. So just because someone thinks they're highly skilled, it doesn't mean they're experiencing Dunning-Kruger.