One benefit of BLM cattle grazers is that they
develop water resources for the native wild
life as well as the livestock.
When someone looks after the means of production, it tends to be more productive.
Families who have farmed or ranched land tend to know how to be the best stewards of that land, especially if they have been doing so for decades or even centuries.
They are generally far more qualified to care for it than someone with a newly minted BA in wildlife management.
That is exactly right...hell, half the feral horses in Nevada would die if it wasn't for local ranchers.