Earlier quoted context omitted.
A land value tax seeks to only tax the value of the land itself, not the improvements. Of course that's not always easy to assess, but neither are property values for normal property taxes. Even setting that aside, if the land value taxes on the land that someone owns dramatically increase then that means the value of their property has dramatically increased, and they can sell the land for a dramatic profit. Certain…
The land value in absence of human activity is zero. All value stems from improvements made by people, either on the land, or nearby.
Sure. Most of the value comes from the efforts of people who have nothing in particular to do with the "owner" of the land though.