Lego Movie: The Man, The Suit, Mr. Business, Controlled Society, Do as you are told, follow the instructions, media controlled people, Everything is Awesome = CAPITALISM's DREAM
Lego story was poking at this narrative and the relationship between children, the message "be everything you wanna be" and the parents.
I am no child psychologist but I suspect that Everything is Awesome is a self reflective statement of 100% cheese which knows itself to be UNTRUE.
Everything is not awesome and the building blocks of life are not Lego, they are human interactions, and the most important lessons that shape all of us happen in our early childhood. Parents (of whatever age) bring your children to see this movie.