Exactly. Reading the source of every program you used was certainly possible back in the 80's when the FOSS movement started; but nowadays, with every program being millions of lines of code, it's implausible to get through all that and still have time to actually use the software.
If you're on OSX/macOS (what a silly rebrand) then if you look in ~/Library/LaunchAgents (and possibly /Library/LaunchAgents and /Library/LaunchDaemons) for any .plist from Google (or Keystone) in there and add
<key>Disabled</key><true/>
under the first <dict> and then unload each file, e.g.
