FWIW, the ones on iOS have always been something you could drag. As far as I have ever understood, all of the UI controls on iOS were designed to be skeuomorphi

FWIW, the ones on iOS have always been something you could drag. As far as I have ever understood, all of the UI controls on iOS were designed to be skeuomorphic in a way that directly made sense for someone futzing with their fingers: you push buttons, you scroll a WHEEL to work with selection boxes, and flip switches to toggle options (which also, notably and at the time almost specifically on Apple products, take place immediately with no concept of "Apply", and aren't part of a "form" metaphor).