Look, I have lived in many countries and have always enjoyed comparing them, not because one is better than another, but just because I like pointing out differences. So if you think that it is a bad thing in itself not to like "rating things" (=not imposing one's opinion on others)
Detailing various differences is one matter, faced with implying whether the lack of movie ratings could be a sign of extreme individuality (a critics own personal bias may adversely affect readers) or yet another indication of a more general unanalytical mindset of the Japanese people is quite another.