A rock? Seriously?
I think you need to figure out whether that shop employs just the one idiot or a whole bunch.
Are your edges sharp or just shiny? Were they dull before the base grind?
Frankly, if you don't know, then just ride it
My edges are sharp and shiny, the nose and tail edges however are not sharp or shiny and are brown,which was the color of all of the edges before the tune.