Let's take windows. The scroll bar on the start-up screens looks different to the one in explorer, looks different to the one in Chrome, which looks different to the one in IE11, which looks different to the one in IE Edge, which looks different to the one in Firefox, which looks different to the one in excel, which looks different to the one in the control panel, which looks different to the one in visual studio, which looks different to the one in Visual Studio Code.
So if they're _exactly_ getting the point, they're pretty unobservant.
Separating look&feel from functionality isn't that easy. In any kind of UX, they are bound to various degrees, depending on the use-case.