I bet they can read it if they Google US Constitution. How many people read the constitution for the first time in the original script, or did they read it for the first time like I did in a junior high civics textbook.
There are a number of texts in cursive, though. The gilded edges on old books were turned toward the sun in order to preserve the bindings. Many libraries of older books didn’t know what all the libraries had.
A small curio shop in Madrid, for instance, had a book whose pages were being used one by on as toilet paper. It turned out that the book was one of Phillip II’s records from back in the planning of the Armada. The owner couldn’t read the book, and voila.
Founding documents for us in one sense goes back beyond the Magna Carta. My two cents.