My guess is that even if a photo is secure within Whatsapp once that photo is displayed on the screen of your phone then it's available to Android to scan. Yes

My guess is that even if a photo is secure within Whatsapp once that photo is displayed on the screen of your phone then it's available to Android to scan. Yes, that's a creepy thought and not only that but presumably such a function would be using quite a bit of the phone's battery to be doing this continuously. It's not clear though why all this stuff would be going to Switzerland particularly.