If it stays Fed land, the various agencies can forbid nearly all human presence and activity.
If it sells to private owners, they also put fences around it and forbid all human presence.
If it goes to the states, it can be available and overseen by each state, which really has the best interest of the people and the land at the same time.
The argument against the state ownership of these lands is that when the states get into financial trouble they will look to sell the land to the highest bidder. Fed Gov can hold these lands in trust for all Americans.
We should work to open access to all Federal lands where possible.
My understanding is that a lot of the lands identified in this withdrawn bill included land that was Fed owned but did not have public access. The lands were surrounded by private property and are not being used.
Sportsmen didn’t want to start the precedent of selling off public lands, even if they could not readily access the lands.