That's a really interesting suggestion. People self-identify for all sorts of reasons, and the pleasure of doing things a certain way is one of them. If you don't like writing queries in SQL, all the arguments in the world about SQL's efficiencies are not going to drag you away from an abstraction you enjoy.

Jeez.. so philosophical.

People say (description)(profession) to quickly describe what they do to other people. They pick the best description.

Long haul truck driver doesn't mean incapable of driving short distances, it means that most days she gets up, gets into a truck and drives a long way. If you're some place that makes outsiders cringe you might get all philosophical about whether the "long haul" or the "truck driver" part of your job description is the heart of the matter, but... no one wants to listen to that:

Internet marketers go on about whether internet or marketing are really the heart of what they do. So do leggo artists.