Whether you like the movie or not it’s all speculative conjecture. Nothing is written about his early youth because it is unknown. The earliest known age was when he was twelve and he spoke with the elders. It may be a nice story but that is all it is.
You’re quite correct and for those reasons I’ll be foregoing the “pleasure” of watching this film. Still, you have to give the filmmakers at least this much credit: this young Semite doesn’t have blue eyes and blonde hair. So that’s something...
I liked the depiction of Joseph and Mary in the film, but the tradition is so mixed. For all we know, Joseph could be been a widower with older children who wedded Mary for her dowry. That is the theme of the pro-gospel of St. James, a kind of “novel” written in the 2nd century based on one tradition.
It's a little more than that, I think. Starting with why the movie was made at all. For example, is "someone" worried about His return?
Since we're in Movie Theology Land, I'll remark that I recently watched Da Vinci Code again. Yeah, yeah, I know, so save it. But interestingly, in that movie it's put forth that "some theories" say the Messiah doesn't come here even knowing who He is at first. Which, obviously, correlates with the entire theme of the movie of this thread.
In India it is taught that the human body is surrounded by three "koshas" or sheaths, each corresponding to a type of divine ignorance. It is further said that even a perfect incarnation of God has at least one, in order to incarnate, and that another spiritual master has to remove it for them so they can remember who they are. Like, for example, John the Baptist baptizing Jesus, while still freely admitting he was less than Jesus.
In other words, the whole forgetting/remembering thing formalized into religious theory.