It's completely unreasonable to expect consumers to research the entire supply chains of everything they purchase in order to factor in all their social costs.

It would be awesome if someone did it on their behalf though. I would love a metric that let me evaluate the energy, water, pesticide, units of child labour needed to get a product to the store/my door just as I can compare the fat and sugar content of my lunch or the efficiency of a new car if I were to tape all the sharp edges and drive carefully.

It's pretty bloody obvious where iPhones physically come from. And it's hardly a secret that western democracies have had their manufacturing bases implode because consumers prefer cheaper to local; few consumer-targeted things are built in the west these days.

Consenting to the fact of global shipping does not imply consenting to radically less efficient shipping, just because it happens, through a fluke of market pricing, to be cheaper.

One does not follow from the other.