That SMART acronym is for internal computer drives, has been in use since about 1995, and is a wonderful thing - the drive keeps track of how many errors it encounters reading, how many bad sectors on the drive, how many hours it’s been powered on, and a whole bunch of other stats.

And then, you, the user (/sysadmin) can, while sitting at the computer, get a report of all these stats and notice if the drive is starting to fail so you can plan a replacement instead of it just dying unexpectedly.

Someone might have made an acronym for “smart” light bulbs, but it would be completely unrelated to the internal computer drive acronym.

So if I download an image from the web with GPS data, and then open it in an app that just reads images (so it doesn’t need location permissions)… That app (on some phones) gets a modified version of the file?

Which could make me think that the image doesn’t have location information.

Which could result in me uploading that file using a browser (that does have location permission turned on) to a website, and I think it’s safe to share because there’s no private information in the image, but my phone has conspired to mislead me.

Yes, that is cursed.