I think there is a need for a dedicated image privacy offline program. On a technical level its very easy to preserve privacy, its just the tools people are using were built for other purposes (Non destructive editing is highly desirable in normal cases).
All the program has to do is scrub all exif data, have a censor box/brush that is 100% black and rencode the image so there is no remaining unneeded data.
Edit: to be clear I meant this as a commentary on the technology, not the people making the mistakes