Do you have a source for that claim? Outsourcing doesn't seem to have to led to less pollution. Most heavy industry that has been outsourced has been outsourced

Do you have a source for that claim? Outsourcing doesn't seem to have to led to less pollution. Most heavy industry that has been outsourced has been outsourced to companies with looser environmental regulations and labor protections and most reporting conveniently ignores a lot of the offshore pollution (which is often hidden behind several layers of indirection to avoid accountability) when measuring the pollution caused by domestic companies. I also wouldn't call the shredding and landfilling of consumer goods efficient and those practices seem to have largely arisen from the ability to mass produce goods cheaply making discounting them further less profitable than simply destroying them. This also ignores the inefficiencies promoted by global manufacturing that involves shipping half-finished products around the world many times over because shipping is effectively free compared to paying for all the manufacturing to happen in one place (and handling the finishing touches domestically allows marketing the product as domestically made). There doesn't seem to be a one-to-one correlation between efficiency (which literally just measures cost reduction, as externalities don't factor into it unless they have a price tag) and less pollution (unless you handwave carbon capture and offsetting as magic and ignore the real world effects to only focus on numbers on paper).