Yeah but this is in the context of not knowing the correct answer. Saying that you believe the popular option is different to yours is a display of high confid

Yeah but this is in the context of not knowing the correct answer. Saying that you believe the popular option is different to yours is a display of high confidence in your own answer, and low confidence in other people's knowledge. Dunning kruger only deals with highly confident wrong people, which isn't the interesting group in our surprisingly popular measurements. Bringing dunning kruger in to it would make more sense if there was an "im not 100% confident" option, but instead it was an absolute dichotomy. It doesn't really mean that all of the people answering incorrectly are completely confident and therefore are dunning krugering. Someone who is not overconfident at 60% confidence adds the same "yes" data point that someone who is 100% confident and wrong does.