[matthest]

The pyramids took 20k+ people to build, which inevitably requires division of labor/specialization. Some chunk of that population had to mine the copper, which was probably an absolutely terrible job with ancient technology.

Serfs were essentially slaves who had effectively 0 ownership over their output, so I'd strongly disagree with that sentiment.

I think the best argument for a time when there was almost 0 alienation of labor was when we were all hunter gatherers. Where every activity was closely connected to something necessary for survival.

As soon as we built larger societies, greater division of labor became necessary to efficiently support the society. And thus alienation of labor became much more pronounced.