Or perhaps an overbroad generalization? If you work in adult day health dealing with backblaze personal backup IS in fact beyond the abilities or interest of many of the folks there.

Or do you not have personal experience working with the very elderly? The very elderly engineers are more into electronics (physical) and can run rings around younger folks on older electronics (repair / vacuum tube testing etc). But I've not seen high levels of interest in things like Backblaze personal backup API's.