Is it a productive use of anyone's time to argue with someone who thinks that there is a single principal model of animal agriculture that has existed for a hundred years in the US, let alone across the world? No, it is not.

For others reading this, I am disengaging from this particularly rubbish line of argument because it suggests that - despite a huge percentage of land for feed crops being freed up - we would somehow be restricted to the comparatively tiny pig factory waste pools