I use a self-hosted healthchecks.io watchdog timer instance to monitor jobs like these and alert if they don’t complete. Of course TimeMachine doesn’t have a way to signal successful completion, unlike, say, Carbon Copy Cloner. Given Apple software quality’s accelerating downward trend, I’d suggest switching to rsync/rclone instead, or Borg/Kopia if you want GUI-driven restores for non-technical members of your family.

It’s long past time you flipped the bozo switch on Apple, the title of your blog notwithstanding.