I feel like you're being a little disingenuous to the OP. He's obviously talking about the economic/productivity value of the land, which is to say that the BLM considers large parts of the country to have little economic value beyond growing grass and thus designates it as free range grazing land.
It doesn't mean it has no value as a wild, natural environment, just that from an economic development perspective there's not a lot going on there.
I think the OP probably did mean that and wasn't thinking that much more deeply about the statement, but I also think it is that very mindset that the posters challenging it are targeting. Because that mindset - looking at everything through a lens of economic development, and a very narrow definition of economic development at that - is incredibly destructive.
I don't think its necessarily a knock on OP, so much as it is just meant to be a reminder that we should really try not to just fall into that way of thinking.
Nowadays, an alternative, and possibly greater, source of economic value might be as a carbon sink.
I'm curious if some of this pasture land might be more heavily forested if it weren't being grazed. Out where my folks live in Colorado, for example, it's striking to see how anything that's anywhere close to flat enough for cattle to walk on is scrubland, but the sides of the mountains are well-forested. I'm no ecologist, but I doubt that's because trees just happen to only grow well on steep terrain.
That might be true, but to establish that state we'd have to kill off the native grazers. People tend to forget that before we had vast herds of domestic cattle in the western plains we had vast herds of bison, antelope, etc.
The vast herds of bison is an interesting example.
I read in some book on pre-Columbian history or other that the prairie that existed in North America when Europeans first showed up was a product of human activity. It seems that folks living in the Great Plains started burning down forests to create more grazing land for bison, in order to have larger bison herds for hunting.
re: antelope, I thought they were browsers and not grazers.
It doesn't mean it has no value as a wild, natural environment, just that from an economic development perspective there's not a lot going on there.