That’s great. Teaching them what it is capable of opens new vistas (not that Vista) and that there are lots of possibilities with other software as well. Not a MS fan at all but Excel is powerful and the point comes through regardless of the platform.
Whether their hubris is punished or not is of no consequence to me. In some ways the ultimate karma is waking up every day to find out we are ourselves. I’m more concerned with building cool stuff for us to use than with anyone getting what I think is their comeuppance.