Such as you have to be able to read and write and do math at some certain level.
Yes, we should implement this as it’s never been tried before! Oh, wait…
https://en.wikipedia.org/wiki/Literacy_test#Voting
Perhaps instead of reading’, writing, and ‘rithmetic, maybe we should test one’s knowledge of history, eh?
Maybe you should learn to read at a level that you understand what I wrote? Smugness based on an intentional misreading just makes you look dumb.