We have to do it. Some of us have to do it in different ways. Doing small things where you can is all well and good but literally none of us are making a single impact in capitalism by making different choices about how we're forced to participate in it. Focus on tearing it down together rather than picking apart individual choices because those individual choices still result in participating in capitalism.
ehhhh carbon footprints going up from not having giant fart-machines attached to them? stalks going to animal feed is a compelling point but it doesn't feel like a coup de grace. and to my knowledge 'regular' crops of corn get fed to animals, so its not an argument that applies to all farms
What do you suppose we do with agricultural remains then? Let it rot on the ground and produce more gasses? Burn them and produce gasses?
It's true, some crops like Sorghum are grown specifically for animals. But my point that let's not pretend that agriculture has no environmental issues in of itself.