This is vacuous. Consider that animals can graze where plants can't grow and that proper land management livestock can maintain the health of the soil. Just as they always have, in their proper ecological niche. The idea that suddenly, commensurate with industrial revolution, livestock became inimical to the health of the planet, is going to require more evidence than your incredulity. Now, we both agree that factory farming is a problem, so why not address that, rahter than go to the extreme of trying to persuade everyone on earth to give up all animal products entirely and forever.