I think it makes the point Eliezer is making fairly well, but also reinforces Martin3's point. I don't think that if people in a fantasy world were capable of conceiving of our world, they'd do what they did in that comic. They'd roleplay as spies, soldiers, captains of industry, homicide detectives, etc.

When I read a fantasy novel, it is rarely about the farmers or artisans of that world. It is about magicians and warriors. I'm not currently role-playing as a low-level guild-member, I'm roleplaying as a druid trying to save the world from a necromancer trying to resurrect an evil god. Fantasy isn't just about magic, it's one variant of wanting to do something important and make a visible difference in the world.

(I did find one instance of a guy who roleplayed as an ordinary person, but that seemed more to prove he had the willpower to do so.)