I find it to be a most useful tool, and it performs well for the purpose it was designed for.
It would seem silly to mark every tool with what it is *not*. Shall we have icepicks marked "not a screw driver"? Can openers labeled with "not a blender"?
While the printed directions with the tool may be somewhat spare, there are certainly many instructionals on the world wide web available for free and with the greatest of ease.