Ranchers are free to buy their own grazing land have their own rules there. On the federal land, the fed makes the rules.
The point stands. If ranchers feel they are being treated unfairly, they can buy their own land.
Ranchers get amazing subsidies from the federal government. If the government auctioned grazing rights like they did other public resources, there would be a lot less complaints. Someone who didn't mind the rules would just outbid the ones that did.