If you want to talk about excessive food processing–by which I mean the actual time, physical and psychological energy, and other resources that go into the creation of a food–and how it might have moral implications, talk about this: We literally destroy huge pieces of the planet to actually raise entire huge, individual, sentient, ambulatory beasts!!! We artificially inseminate them by putting sperm into their vaginas with poles or our gloved arms, cut off their inconvenient body parts such as penises, testicles, tails, and beaks while they’re still alive, kill them with complicated weapons and machines, drain their blood and cut off all their skin, cut off and throw away their heads, cut out and throw away their organs, pull their reproductive secretions out of them (often after starving and blinding them into laying), squeeze and prod them with hands or machines til the insides of their bodies finally give you inevitably puss-and-blood laced milk which is then turned into convoluted dairy products like cheese, butter, yogurt, and ice cream. Yet, incredibly, it’s a loaf made of beans and water–no cutting off and throwing away a head involved–that’s called Frankenfood! While plant foods and agriculture are indeed complicated, there is absolutely no plant-food processing comparable–ethically, practically, environmentally, physically, psychologically–to the necessary extremities that must be visited while “processing” individual sentient animals for food. If they’re not the most processed food of all, I don’t know what is.
-- Myths about "The Vegetarian Myth"