If you can describe a dividing line for Western society which puts Japan on the outside and all of the Pope, Barack Obama, all members of Congress, Hawaii, Ireland, and France on the inside, you’d get a really good East Asian Studies paper out of it. If your definition of Western society excludes any group in that second set, it is clearly a useless definition.

(Ask a simple question, get a simple answer: yes. One has to be mendacious about definitions to come to any other result.)