Well, not everybody needs, or can handle, a big spread of 100 acres or more. On ten acres or less, a family can easily grow enough to survive and sell, providing the soil is good and water is available.
If by “homesteading” you mean government owned land, where it still might be possible to just stake a claim for free, then you might be correct. I haven’t heard of anyone doing that in quite awhile. Seems like Obama wouldn’t like it!
a homestead is a quarter section or 160 acres granted by the government to those that will occupy and farm the land
I can’t say with certainty but believe the only decent land for that purpose is in Alaska.
FLPMA started the Sagebrush Rebellion and created animosity among many towards the BLM.