I fail to understand the fixation with the
Upgrade to Windows 10 icon. :) It has nothing to do with getting a free copy of Windows 10 between its release and July 29, 2016.
It does have to do with giving Microsoft permission to download Windows 10 automatically to your system (for installation under your control) after its release at some random time. Something I would not want since downloads impact performance and usually just when I want performance.
Here's more info for the fixated:
How to remove (or acquire) the Windows 10 free copy icon