This was an online survey with 1134 respondents. Comparable to a medium-engagement Twitter poll. It's surprising to me that you think this is representative of the perspective of the of your country as a whole.
Perhaps I'm not that inteligent myself ;) Then again, I never said it's my country, I'm from Poland. I could give Polish-specific examples of extremy stupidity, but the flat earth example I find the least controversial.
https://carsey.unh.edu/publication/conspiracy-vs-science-sur...