My friend says Microsoft is forcing Windows 10 on us (details inside). Is this correct?

See http://www.infoworld.com/article/3029613/microsoft-windows/new-details-emerge-about-forced-windows-10-upgrade-and-how-to-block-it.html

My friend says that the upgrade software has already been installed in your system (if you have Windows 7 or 8.1), ready to go. The Win 10 popup will already have the yes-go-ahead option checked by default so that if you’re not careful and agree to the EULA, that does it, your next reboot will be under Win 10.

One reported problem is that if Win 10 does not have the driver for your Ethernet chip, you will have no network or internet connection.

Is he right? What are you doing about it?