This is also covered by the study and the article I shared above. It would require using more lands for crops that feed people, but that's ridiculously small compared to the land that would be regained from stopping animal agriculture, which is 75%. Just removing cows would do the vast majority of that.

Crops for feed can be regained and if most pasture land is inappropriate for crops, some are, so we would gain from freeing those too. Furthermore, this land can be given back to biodiversity, which will also benefit us in the long term, if just protecting biodiversity for the sake of it is not a good argument for you.

Again, I am not vegan, I mostly advocate for reducing, not forbidding, consumption proportionally to ecological impact. If some people for medical reason require meat, I'm completely fine with it, this would likely be a small percentage of the current consumption.

Omnivore, not obligate carnivore except for a few exceptions maybe, so we could use a low meat diet or a fully plant based diet fine.