You're taking a narrow perspective. Fidgeting is distracting, to everyone else. Whatever your ideals of a perfect world may be, 20 dump trucks of kids needs to be educated at one facility every day. Whatever you may think one kid is doing to help him focus, that kid is disrupting the focus of his 8 neighbors. Something needs to change, but it's more than just perspectives.
"that kid is disrupting the focus of his 8 neighbors"
Whatever else Catholic churches may get wrong, apparently all of the "modern" ones I've ever been inside figured out the "crying room" technology a long time ago. Setting up a "sound diode" isn't all that difficult with modern technology. If whats really important is forcing future factory workers to line up in alphabetical order in row/column format, then flexibility might not work.
