I only recently discovered Reticulum, only to then learn that the developer has retired from working on it. Do you know if there's still any community members carrying the torch?

The discord is still very active, and there are still commits from original developer, so I am not sure. Its a simple enough protocol, though, and it's been reimplemented a few times. I made my own no-class python version, js, C, etc. Someone made a rust version.