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This has nothing to do with grazing land. This is crop suitable land being used to grow crops that is then fed to livestock. There are no assumptions being made and it is not junk science, you're just not very good at reading.
Except it's not, we are not growing crops just to feed to animals, as I've explained multiple times now, grain is created from the shit we cannot consume. Why is this so difficult to understand?
It's difficult because it's just very untrue and wrong. This is very widely documented, grains are absolutely grown just to feed animals. The majority of corn and soy in the US is grown to feed animals. I'm not sure why you're so insistent on something that can so easily be looked up, you don't even need vegan sources, the animal ag industry reports this stuff.
Please provide the numbers then. Pretty sure someone already posted the numbers, in which only 5% is grown for livestock only.
You're pretty funny, before you said they only graze, then you said we simply don't grow food for cattle, now you've admitted we do based on some random dude pulling 5% out of a hat.
They cite a paper that puts the land used purely for growing feed at about 38% of our cropland. If you combine it with grazing land it goes up to about 80%. Cropland for food humans eat is just 16%.
Almost half (44%) of the world’s habitable land is used for agriculture.
Habitable land is not the same as the ability to grow food on it.
The UN FAO does not provide breakdowns of the amount of land directly devoted to feed, food, and industrial production. It does provide this in tonnage terms, however, converting this to area estimates is complex, especially when co-products are considered.
So most stats that are pulled out of someones ass, because they came up with a system that says all feed we provide to animals is more than the tonnage we eat ourselves. No shit we feed way more grain to a 2k lb cow. It's 2k fucking lbs. It doesn't even provide a breakout of what isn't actually human consumable, because it's bullshit stats.
If we combine global grazing land with the amount of cropland used for animal feed, livestock accounts for 80% of agricultural land use.
And if I combine the road as part of my land in front of my farm I have more land...this is fucking stupid. Grazing land is not usually suitable for plants. It's why crops are not planted usually in places that are rocky or have to many hills.
You're source is bullshit.
Habitable land is not the same as the ability to grow food on it.
Umm yeah? No one said it was.
So most stats that are pulled out of someones ass, because they came up with a system that says all feed we provide to animals is more than the tonnage we eat ourselves. No shit we feed way more grain to a 2k lb cow. It's 2k fucking lbs. It doesn't even provide a breakout of what isn't actually human consumable, because it's bullshit stats.
When talking about feed grown specifically for livestock it doesn't actually matter if it's human consumable or not, it's land that could be used to grow human consumable food. They make the distinction between cropland and grazing land pretty clear.
Also you don't just get to dismiss science when it doesn't suit whatever you think. You asked for numbers, there they are.
And if I combine the road as part of my land in front of my farm I have more land...this is fucking stupid. Grazing land is not usually suitable for plants. It's why crops are not planted usually in places that are rocky or have to many hills.
You're source is bullshit.
There are things that can be done with grazing land other than planting crops and almost all of them are better for the environment than having livestock graze on it. They are just talking about the total land at that point, not trying to convince you of anything, stop reading everything so defensively.
And also it's a pretty credible source and it's definitely better than your anecdotal 'we literally don't grow food for cattle at all, ever' nonsense.
We use more than twice as much land to grow feed for livestock than we do for humans, and the livestock only supplies 18% of global calories. It's an inefficient use of land full stop. When there are more people we will need more efficient sources of food. This might mean farming more human food and therefore less animal feed.
https://www.sciencedirect.com/science/article/abs/pii/S2211912416300013
86% of the global livestock feed intake in dry matter consists of feed materials that are not currently edible for humans
But it also makes an important contribution to food security through the provision of high-quality protein and a variety of micronutrients – e.g. vitamin A, vitamin B-12, riboflavin, calcium, iron and zinc – that can be locally difficult to obtain in adequate quantities from plant-source foods alone
You are misreading that 5% claim. 95% of global livestock are fed food grown specifically to feed them. 5% are fed the way you claim.
Which is not true, hell even the users other source doesn't say that. If we grew 95% of our crops to feed animals, there wouldn't be a high price on livestock, it would be a lot cheaper and vegetables would be extremely expensive. I can buy 10lbs of potatoes for like $5 still.