I use Google photos to store, organise and back-up my photos. My camera does not have geotagging. And they do infer the geolocation (city/region) based on the GPS data from my phone at the time the photo was taken. If I change the metadata, the location changes.

I have mixed feelings about sharing my location with Google at all times, but this one feature is actually very useful to me, and provides real value.

That's interesting, and I wonder how they do that. Things I'd want to know include:

* what app you used to upload the image to Google

* what Google app / service identified the image

* how you uploaded it (i.e. if you uploaded it via a smartphone with location services on, I imagine Google is allowed to say "Hey, this upload is being done at this lat/lon, which I've determined either from GPS or from cell and wifi triangulation").