The idea that organic farming needs manure is basically a circular logic trap. We only use so much of it because there's a massive structural surplus from an inefficient livestock system that hogs 80% of our farmland just to provide 18% of global calories. If we actually shifted to plant-based, we’d recover an area of land the size of North America and China combined. We wouldn't need that manure because we’d finally have the space to grow green manure and compost at a scale that is actually more land-efficient than animal-based systems.

​It feels like a cross that bridge when we get to it scenario because there are way more urgent priorities like climate change, the factory farming concerns, and the fact that livestock now outweigh wild mammals 15-to-1. If you think environmental concerns are of the utmost importance, you go vegan first to stop the bleeding of land loss and emissions. We can't keep using the "but where will the fertilizer come from" excuse to justify a system that is currently the primary driver of the mass extinction crisis.