Re: Sending recent activity data to Microsoft
"This is why I still use Windows 7-64, until Jan 2020."
The Windows 10 privacy situation has been much improved since 2015. Most people don't realize that they can pretty much stop telemetry by shutting off one or two services ( the primary one being "Connected User Experiences and Telemetry" ).
The rest can pretty much be handled through the improved Privacy section of Settings. The Cortana component of Search can be handled with a single regedit.
Moreover, with a single line in PowerShell you can wipe all the "apps" off your local account, with a second, all the "apps" on the system (new accounts will be created without them). Imagine the possibilities, eh?
It takes a bit of tweaking, but hey, it's Windows, and it's meant to be tweaked.