I mean I'm not really finding anything I disagree with here. I'm familiar with right to roam laws, but to say they allow "access" is in someone passing through, is still, for practical purposes "exclusive use."
When you say it isn't "technically" inherited, I mean only that it is de facto inherited, again, a kind of aristocracy.
I cannot say I am super familiar with the Treaty of Guadalupe Hidalgo, as that is from nearly two centuries ago, and was the result of war. But I generally agree with your point about Native American nations. I see the argument that Native American nations as generally more reasonable in that, they are treated as at least quasi-independent states, but I wish that that independence were either more fully recognized or eventually sunset, because, yes, I see having a special class of people within a nation as inherently problematic, and while I wish the circumstances that brought us to a the place we are were different, we are born into the world that we are born into.
When a system of de facto privileges, especially when heritable, is set in place in a society, I'm not going to in support of it, especially when, those privileges make life more challenging for those who weren't in a place to take advantages of them when they were conferred.