Agreed.
To me it's unreliable enough to always warn about that any potential new convert.
I am trying backup every once a while (backup of secondary profile to usb -> restore on a fresh profile), and there's always something failing -- like now it reported a successful backup but when I look at the status - "Not backed up as it wasn't used recently" -- like... so what? Status still showing "Waiting to back up..." for several more apps after it was reported finished successfully... An app with a weird red exclamation mark....
System Apps
All "successful".
'Check backup integrity' immediately following backup always fails - it checked 0B though, because it's broken. Very reassuring.
Restoring of backups of course brings multiple errors reinforcing the perception it's an unreliable attempt at backups.
Yes, I know; something better is planned. I wish we could at least use something great that has been already proven working in the meantime.