Earlier quoted context omitted.
Are people who were forced to learn cursive smarter? They're just older. Doing this may well expose you to age discrimination lawsuits, since it's just sneaky indirect age filtering. Another example would be if you required a minimum SAT score of 1601. Sure, someone could have gone off and taken the SAT as an adult or a young child but in reality it is mainly an age filter.
Are people who were forced to learn cursive smarter? By definition, people who know more things are smarter than people who know fewer things. That's just how it works. For centuries, people have striven to improve themselves through the acquisition of knowledge and skills. It is a quirk of recent generations that so many members take pride in their lack of knowledge. I'm repeatedly bewildered by my Millennial collea…
Imagine, you have two people. Person A knows cursive, person B does not. Person B knows the ins and outs of Newtonian physics, person A does not.
Which person is smarter? Which person would the cursive test say is smarter?
What you seem to have mistook for people not knowing things without shame, is people valuing knowledge not by the preponderance of its quantity but by its total when multiplied by its utility.
Otherwise I do not envy the shame you must feel at lacking the knowledge of which plants are edible, how to.clean a carcass, how to fashion a needle from bone and an axe from stone, the mixture of clays to use to make your bricks, and all manner of other once-necessary tidbits whose usefulness has lapsed for the general population.