I've only seen articles that say Google was going to "explore" adding differential privacy to Gboard analytics [0]. Do you know if the feature ever shipped, and is it the only way sends data to Google?
I'm mistrustful of Google's privacy stance, since they have a history of changing their privacy policy, then misleading users about it. Remember when they implemented personally-identifiable web tracking and sold it to users as "new features for your Google account"? Merging Doubleclick's tracking data with my Google account doesn't seem like a feature to me.
