Yes, definitely much smaller scale. Still, the unit of work is similar (massive stone cut, moved and placed).

If it takes a lot of people, that implies a lot of people coordinating at that time an place. In a sense, it gives us a minimal level of societal complexity that must have existed. Since britain didn't seem to have towns or cities, the nature of this complexity would be pre-civilised in the literal civil=city sense.

I agree though, civilisation has been getting older as evidence emerges. Or, as I prefer to think of it, the mysterious precursors to civilisation have been getting more impressive.