Cropland usage is still lower when looking at the nutrition of it all

we show that plant-based replacements for each of the major animal categories in the United States (beef, pork, dairy, poultry, and eggs) can produce twofold to 20-fold more nutritionally similar food per unit cropland. Replacing all animal-based items with plant-based replacement diets can add enough food to feed 350 million additional people, more than the expected benefits of eliminating all supply chain food loss.

https://www.pnas.org/doi/abs/10.1073/pnas.1713820115

Further, we can plant other crops on that land growing feed crops. The greatly lower cropland usage offers quite a bit of flexibility to shift around production