My exact thoughts as well. Im like:

“Huhh wtf, this cant be true. Ahh it must be the Onion. Wait wat… This is not the onion…”

Ohh, I havent thought about backing it up with Syncthing! Thank you!

If you need a UI to have albums and share them then yes, the previously mentioned Immich. I host it as well, and it is truly awesome.

One caveat though: it is still pretty early in development, there might be breaking changes. For example a few weeks ago you needed to update the docker compose file because they changed dependencies.