content: You are absolutely right, the land is the issue. I think the article implies that the logging industry in responsible for the deforestation. Trees cut down for lumber are replanted to be cut down for lumber later. Most deforestation is because of land burned to prepare to grown crops there instead.  So what is the plan? Drop trees from a drone onto some farmland? Maybe some logging company would buy these drones if it is cheaper and easier than how they replant now. But there is no way these drones will help reverse deforestation.