Nice straw man. No one has made such a claim.
The point is that in many states, there is a great deal of land owned by the federal government (and state governments) and that it may be reasonable for some of that land to be put on the market to sell at market value.
The government gets immediate revenue.
The government is off the hook for maintenance costs.
The land might well be used for profitable business, thereby generating actual tax revenue.
Most folks arent' saying that we need to "sell Yosemite" or "sell Mr. Rushmore". But there are lands that could be put to good use and the government withholds them from the market.
People who think the government should be smaller may also think that the government should own less land.
ROFLOL, no there is not, there is only someone wanting a slice of cronyism, there is no shortage of lands for your to buy, go find some. As a matter of fact I would bet there are hundreds of acres within fifty miles of where you live, when there is a shortage of land let me know. I have already pointed out there are thousands of acres available in the rust belt. Go buy some and start that business.