You've probably got to be quite deeply invested in them to watch the whole thing, and I am in that category so I'm enjoying it.

They must be the most influential pop group of all time (pop meaning popular in this case). The only other artists I can think of to rival them are individuals (Elvis, chuck berry, Michael Jackson, Hendrix, and so on).

Maybe you need to be a sociologist to say how influential they were outside of music, but from a UK point of view they were surely crucial in updating Britain's global image from Empire and Churchill into the new post-war world.