I'd say he believed you would assume he was talking about the U.S. But yus that would be close minded.

Honestly, I think rating are dumb. If a movie is named something grotesque or violent then don't let your 4 year old child watch it. If at the age of 13 your kid doesn't know the difference between a snake and vagina then yer doin it wrong. If a kid really wants to see a movie he isn't supposed to, then the parents should watch it with him. Seriously, the description on the back of a movie generally is enough to explain how not kid friendly a movie is.
And drug promotion? What kind of bs is that? If a kid honestly wants to do drugs in high school, he will. If he doesn't he won't. Usually friends help more with that than movies do.