You need to reaquaint yourself with Norman Rockwell. See, unlike Spielberg, Rockwell's iconic America was one of complete families, religious faith and enduring American ideals. Spielberg, OTOH, is just another touchy feely boomer, albiet a talented film maker. His philosophical content and the enduring messages of his films, however, will be like that of most of his g-g-generations artists and luminaries - a mirror reflection of a lost and self-absorbed generation without root or branch. He is a painter of pretty signs on a dead end road.
It's inevitable that an Artist will reflect his age. For better or for worse. His theme is the collapse of the nuclear family and the nostalgia for said nuclear family. The dissastifaction of one generation with another that you speak of has been around since Classical times. Boomers don't like Gen Xers either.
Rockwell's wife was loony as hell and spent a good portion of their marriage in and out of institutions and under the care of various therapists. In later years he turned bitter and that fact is reflected in his paintings. The painting entitled "The Problem We All Live With" is dark in the extreme.
Norman Rockwell had neither a "Norman Rockwell Family" nor a particularly Norman Rockwell outlook on life.