Just to be clear, what was discontinued was the official gui app.

Binaries are still updated and developed. The other gui app, syncthing-fork, still exists.

This is absolutely not the case.

Looks like you already settled on this, but I’m doing exactly this (syncing obsidian, as well as photos/videos from camera reel), to desktop and NAS, using syncthing-fork. Let me know if you want some pointers.