That's the whole point of this article. Why do these facts fall under the heading "something no one would know"? Why are people so poorly informed about the direction and magnitude of large-scale changes in the world's societies and economies?
Naturally this has nothing to do with chimps, that was just rhetorics towards a clickable headline.
Why are those things people should care about? I understand that knowing these things means you have a less-skewed view of the world, but I don't think it's unreasonable that Average Joe doesn't know the world life expectancy or the population distribution. To most people these metrics are just interesting curiosities and nothing more - they have other things to care about, so naturally something like this falls by the wayside. I feel like the article is unfairly criticizing people for not being informed.
I think it would be more interesting if someone gave this to 1,000 leading politicians, who should be much more knowledgeable about this stuff but I suspect would only do somewhat better, if at all. (Disclaimer: making that up.)