I talked in person to some technical Googlers at an event a few weeks ago. I asked them about this particular rule and they said they were allowed to use Windo

I talked in person to some technical Googlers at an event a few weeks ago. I asked them about this particular rule and they said they were allowed to use Windows but certain other engineers were not allowed to. I came from the same understanding as you but my new understanding was that except for certain departments they are allowed to use Windows.