The position of the Feds is so silly, it's actually hard to get your mind around it. There's nothing in the Constitution that gives the Federal government the right to own land in any state except for military installations, arsenals, and the like. Highways, maybe. Parks are a stretch, nice as many of them are. States can own those to the same purpose, if the legislature allocates the money and pays the owners.
But open rangeland? Special spaces for turtles or campaign contributors' Federally funded solar kickback projects? Random tracts of land for putatively endangered species? Forget about it.
Nevada permits open range grazing, and Bundy's cows have been grazing on open range in Nevada. The Feds have no business being there, never mind charging money for it. Bundy is right.
We're talking about two different things. You're talking about what the law should be, which is an appropriate discussion. I'm talking about what the law currently is.