A big percentage of the top grandmasters skip high school and almost none of them have went to college. They are “smart” in that they have the potential intelligence to learn that stuff, as demonstrated by them having learned chess, but they have basically no knowledge of statistics, mathematics, plenty of other general knowledge topics.

From that point of view, you should really consider them to be as knowledgeable about these things as high school dropouts. It was hilarious following the whole cheating thing and seeing them try to interpret these statistical results and coming to really stupid conclusions.

You could say it’s difficult to see them this way due to the cultural and historical perspectives on chess but this is the reality of top grandmasters at this time.