Maybe the calzones are regional. I was stationed in northern Italy in the 1990's and the typical calzones there were the larger size like the kid is holding in that article, not the small ones like the baker is making. They were essentially a full sized pizza folded over and filled with sauce, cheese, ham, and an egg. I ate a lot of them.
Most every restaurant made it with standard pizza dough but one restaurant about 20 miles away was famous for their calzones and made them with a flakier crust than the others. They were my favorite. It was Vecchio's cafe in Polcenigo.