I think it a reference to "default city" from the russian internet, when people noticed that people from Moscow never specify the city when talking about topics which would normally require knowledge of which city are they residents of

Eventually it evolved, sometimes people say "hey, I'm from DC" or "hey, I live in DC2" (that means the second largest city, Saint-Petersburg)

Especially from someone whose "modern art" means mid-19th centuary European art under an article that starts with "In the mid-twentieth century".

For fun, ask a citizen of the Default Country where cars were invented ...