The last stage of mastery is when you drop the need to prove to the world that you don't need to shuffle keycaps by just keeping the existing ones rather than blanking them out.

Back in the dark ages of having to work in an office with shared space in a cubicle farm, it wasn't unheard of where people would swap their keyboards with others because theirs was not working correctly rather than going through IT to get it looked at--possibly also knowing IT might just shrug their useless shoulders at it. I'm guessing a keyboard with blank keys would prevent that.