The Windows 8 (especially post-8.1) pushback baffles me. If you put any effort at all into learning how to use it effectively, the acclimation period is definitely shorter than Win95 or WinXP was. I use it on a desktop machine with two 30" displays and only mouse/keyboard inputs (i.e. no touch). You certainly couldn't pay me $150 to go back to Win7 at this point. I even find that I use Metro apps on my desktop fairly…
The issue with Windows 8 isn't that it's unusable, obviously it can be used. The issue is that the changes to the desktop were made in service of a use case (that is: a full screen, mono-tasking, touch-based mode) that doesn't really seem to exist on a desktop computer, and so the changes do not improve anything for most people using traditional systems. Changing the way a UI functions has a cost to the user, and use…
Well, yes, it would be difficult to argue that, starting with that what users find to be better is by definition subjective, not objective, so to argue that would be self-contradictory from the gate.