Deliberately not a check-in
Plenty of apps ask an elderly person to press a button each day to confirm they're alright. GenSharing doesn't, and won't. It doesn't monitor anyone, it doesn't watch for anything, and it never reports on whether someone did or didn't use it.
It's a message from someone who felt like saying goodnight. That's the whole of it. Nobody is being checked on, which is exactly why it doesn't feel like being checked on — and why what's left behind is somebody's voice rather than a log entry.