It's an example in cultural differences. We can infer from the structure of the story, that it takes place in Japan. There, masters of great works aren't record

It's an example in cultural differences. We can infer from the structure of the story, that it takes place in Japan. There, masters of great works aren't recorded and only the works remain - a clear consequence of day-to-day Japanese humbleness. Contrast that with the western world, where names like Leonardo and Michelangelo are clearly recognized for their work and we even remember people from something like 2000 years ago, like Plato, Socrates, Pliny, etc. The point of the story then is that if you want to be recognized for your work, move to Europe. Or if you're already in Europe, don't move to Japan. It's also a joke.