That's true, I shouldn't say 100%. But the location data is in my iCloud Photos box, which I think Apple will at least internally take a hard look at anything t

That's true, I shouldn't say 100%. But the location data is in my iCloud Photos box, which I think Apple will at least internally take a hard look at anything that wants to access it. If the iPhone calculator app team said "We're going to turn this into a social calculator and it's going to use your photo library to automatically identify receipts to calculate tips and splits, and we're going to do the image processing on the server and make a database of where we identified your receipts to help with identifying restaurant payment locations," somebody higher up would tell them "No, we need to do receipt recognition all on-device." That makes it a lot easier to avoid accidental data leakage.