Is Spielberg making a statement about himself?

Peter gives up the adventure and of being a boy so he can grow up and finally be an adult. If you look at Spielberg’s filmography up to this point, he made mostly fun, childlike films (eg ET, Raiders, Goonies) up until the mid-‘80s when he transitioned to doing deeply serious films for adults such as The Color Purple and Empire of the Sun. Was this film almost like Spielberg addressing how he lost his childlike charm and this film is his attempt to return to form just as Peter returns to his former self.