NREL: Power Technologies Energy Data Book - Wind Farm Area Calculator
has a study "Land use requirements for modern wind power plants in the United States" showing in the concluding section widely varying figures:
-93 projects,14 GW capacity,0.3 plus or minus 0.3 hectares/MW capacity for direct impact including roads
-52 projects,9 GW capacity,0.7 plus or minus 0.6 hectares /MW capacity,implying total direct impact area on both temporary* and permanent disturbed land of about 1 plus or minus 0.7 hectare/MW
-161 projects of 25 GW of capacity,excluding several outliers,average value for the total project area was about 34 plus or minus 22 hectares/MW,equal to a capacity density of 3 plus or minus 1.7/MW/km squared.
The latter figure is close to the 82 acres a megawatt used as the basis for calculation in the opening post,so do you still object to it?
*land can be restored to normal use