The problem isn’t the grazing fee, but the continuous reduction in the number allowed. They also are retiring huge sections of land from any grazing based on human=evil. This is contrary to public law, which still mandates multiple use.
Oh....and I am absolutely certain that my senators, John McCain and Jeff McFlake, would gladly raise grazing fees.
From 1976 to 2000 grazing units fell from 10.1 million to 9.8 million
What increased? Conservation Areas and Natl Monuments, Coal, historical and archeological sites, areas of critical concern, recreation areas, endangered and threatened species, wilderness and wilderness study areas.
This is from 1976 to 2000 so these trends likely continued after 2000.