I think GP meant "his kid's movies", as in movies directed by Goro Miyazaki, the son of Hayao Miyazaki.

Definitely. Lots of Ghibli films (and anime in general) aren't really targeting an age demographic the way the west would.

Kiki's Delivery Service, Totoro, Castle in the Sky, Arrietty, etc. are all watchable at any age.

Even the more mature films like Princess Mononoke would be unlikely to garner more than a PG rating.