Well...think about it from the BLM's point of view. If you worked for them and were responsible for their risk management, it would be in your best interest to control that backcountry. Baker and Crystal have the same issues with adjacent land. If I understand the rules correctly, the assumption is that if you have the gumption to hike up to the top, you have the skills necessary to make your own judgements about risk. If you're a gumby a need a lift to get up there, you are more than likely going to look for someone to sue if you get yourself in trouble. My 2 cents at least.