Google Photos and Gmail openly and heavily scan server-side, and I'm sure a lot of us use them, how do we reconcile that?
What I don't want is Google performing a scan of the internal memory of my Android device!
Server side they can do whatever they want, and I choose what data they can access, but on my device not.
With the iOS ecosystem, in my experience having everything backed up to iCloud is the default position, and you have to turn it off manually.