Well yeah, but Beatlemania didn't start until the late 60's (the Beatles came to America in 1964) and at the time their haircuts were considered scandalously shaggy. If you think of the range of hair lengths, for men, in 1961 it wasn't much different from what's acceptable in the military or in the 1950's. But in the 1970's, shaggy Luke Skywalker hair was fairly normal, moreso than it is today for instance.