I think you are underestimating the scale of our cattle. The majority of deforestation is due to cattle [1].
The world is basically dominated by us and our cattle [2] leading to massive losses in biodiversity [3].
If everyone in the world would eat the recommended USDA diet (mostly backed by industry and totally not healthy for you) we'd need another Canada to sustain us all [4].
By the way, most of the grasslands are man-made and we should try and reforest those areas to combat losses in biodiversity and climate collapse. Furthermore about a third of all fresh drinking water (not rainwater) is used for cattle [5].
I think you should look into the accounting of those sources. So much of what you posted is totally irrelevant to cattle ranching, particularly in the United States. You’re just throwing a bunch of spaghetti at the wall, “look, muh data”