Look at the chart in the article, look at the countries on each end of the opportunity spectrum. There are many obvious economic, societal, and cultural differences between the countries on one side and the other of that spectrum.
To take this correlation and use it to forward a sexist idea (that women PREFER different, often worse-paying, fields and that's why there's less women, and thus we don't need to change anything in our industry's culture) is the reason I would downvote this article and the OP's comment.