Are you sure? If the windmill didn't make milling more efficient, and if hand milling at home was an effective tax dodge, people would avoid using the windmills

Are you sure? If the windmill didn't make milling more efficient, and if hand milling at home was an effective tax dodge, people would avoid using the windmills. And the tax collector coming to the house is just as oppressive as being taxed at the windmill. A quick web search suggests windmills increased grain production by a factor of 5.