In my opinion (I support Macs, PCs, iOS devices, etc.), it's especially hard to intuitively grasp a metaphor from taskbar buttons if, as is the case in Windows,

In my opinion (I support Macs, PCs, iOS devices, etc.), it's especially hard to intuitively grasp a metaphor from taskbar buttons if, as is the case in Windows, the taskbar buttons are so tiny and poorly-designed that it's nearly impossible for people with average vision to discern what the icon is supposed to be.