Earlier quoted context omitted.
The disc moves, but there aren't any moving mechanical parts to cause it to move. It's done with electromagnetic pulses. I'll update it to make this more clear.
I don't really see what the distinction is? You might as well say a motor has no moving parts, because it's done with electromagnetic impulses. But that would be absurd. Obviously the hinge of each disc will wear and tear and eventually fail. Buildups of dust and oil will affect them too and prevent them from flipping. Flipdiscs are as mechanical as mechanical parts get. You writing in the intro: "...have no moving p…
Probably because they are just a hobbyist and not an expert in the field (nor do they assert that they are). Maybe be a little kinder on the internet. It sounds like it was just a minor oversight.