Our perhaps unsatisfying conclusion to this seven-app showdown exposes an important truth: the photo management software world is too complex for a one- or two-person dev team to properly handle. Unless we see some of these app-makers start to pool their resources together, it could be a while before we get a truly excellent self-hosted option to pry many of us away from Google.
Personally, I am interested in exploring Nextcloud as a space to store my photos and probably should move my email. I am also interested in the idea of storing all the images associated with my blogs in one spot and referencing them from there. This is something.