Grass grows more vigorously but also consumes more nutrients when regularly pruned, other plants also "grow more vigorously" e.g get replanted when harvested by humans. This does not seem unique to grass or animal feeding.
Even if it was, grass-fed beef is about 1% of the supply in the US. It has also been shown that grass-fed beef on average causes more environmental degradation than conventionally fed beef, due to the deforestation required to create grazing areas
Even if it was, grass-fed beef is about 1% of the supply in the US. It has also been shown that grass-fed beef on average causes more environmental degradation than conventionally fed beef, due to the deforestation required to create grazing areas