

You could also go the other way, if you are smart incapable of being efficient at me menial labour. You will go hungry, until such a time you are hungry enough to do the menial labour for very cheap.
Turning us into two distinctly separate classes, low educated low intelligence, and high intelligence, highly educated elites controlling swarms of smart AI
To be fair though, if almost anyone had a 3D printer, only plastics would be distributed, and only the plastic that is needed.
What I mean is that you don’t have to manufacture in advance and actually ship plastic products to every corner in the world so that these plastic garbage cab sit on shelf and then end up in a landfill after not being sold for tens of years.
Basically on-demand plastic garbage production would in most cases where the amount required is not well understood be beneficial if most people did it.
Because almost everything is made in excess, and the wasteful production is just offset in cost.