No economic, agronomic or environmental argument for localism is valid. And when you add food preparation to the equation the problem balloons to truly grand proportions.
But that’s not what localism is about. It’s entertainment, status signalling, social behavior, unexamined ideological biases, philosophical confusion, instrumental political posturing, sexual performance, etc. etc. Those are important issues that cannot be disregarded, but they have little or nothing to do with economic or agronomic systems optimization.