nobody is going to automatically upgrade anything. it just downloads the update. you still have to go through the normal upgrade procedures with all of the bells and whistles. you won't suddenly wake up with windows 10 on your PC.Not so easily avoided when MS is automatically upgrading systems. You know how people tend to go with the flow, when as you say they don't know.
I seriously don't understand you. you know all of the details about the upgrade and yet you still post these weird ideas and misconceptions. is it intentional? stop scaring people into thinking MS is going to force win 10 to install on their systems.