No, I'm going to maintain that the machine is pretty beautiful in its simplicity. The steel is fed into the machine where it goes between two sets of rollers; there's a simple screw to get the steel lined up perfectly between the two sides. A single chain around a dozen or so axles keeps them all in synch. As the steel slides down, those rollers first start putting the center ridge on the piece of steel. As it progresses to more axles, there are more and more sets of rollers (one top, one bottom) that presses the steel into shape. When it gets to the end, the Amish guy simply puts his tape measure on it - when it hits the correct length, he pulls a big lever that shears off the entire piece in one loud cut. I'll used the wrong word, but it's like extruding the roofing - just cut it at the right place. At one point, he slowed it down, and by eyeball, stopped it when the next to last piece of steel was sticking out about a foot. He went back to the roll of steel end of the machine, pulled a lever, and cut the steel there. When my last piece was cut, he had about 3/4" of scrap left.
Again though, for what it's worth, I was looking for a video of making steel roofing. Each of the videos I found had incredibly complicated computer operated machinery, and a greatly automated process. Here, one person operated more or less the guts of a big manufacturing operation with no automation. A fairly simple hoist to transport large rolls the length of the building. The hoist was on a steel I-beam. But, all the support for that I-beam was wooden posts. Big wooden posts. Under the end of the I-beam, was a cart on 2 short railroad tracks. The bed of the cart was rounded & could be pumped up or down so that the center of the roll lined up with the spindle on the main machine. Once the steel was rolled into place, a BIG wrench (3 feet long) was used to expand the spindle to hold the roll of steel. 10 feet or so was unwound, and fed into the beginning of the machine. A bolt was turned to push the steel into perfect alignment; I'd estimate to 1/64" precision, judging by the finished product. 5 minutes later, I had my roof.