The real issue here is that Windows 8 somehow recognizes Wacom pads as touch inputs (with swiping from sides support). If it recognized it as a mouse, it would simply tell the user to use "hot corners":
- Top-Left: App switching
- Bottom-Left: Start screen
- Top/Bottom-Right: Charms menu
A one-time unskippable tutorial that you can get through in less than 10 seconds is probably not worth complaining about. Displaying the wrong directions to Wacom users is.