Cloud replication is NOT a backup
So users should be made to write "Cloud replication is not a backup" 100 times before you are allowed to use it.
It's not a backup unless you have at least 2 copies, and they are offline. And, ideally, tested.
Just having a synch tool from your device-of-choice to The Cloud (tm) is not a backup, as any phule kno. It's handy for remote access, and sometimes for 'whoops' moments, but its NOT a BACKUP.
For comparison, my photos are kept on the local disk, in one cloud sync (with delete disabled), 2 offline monthly USB disk backups, and a set of annual printed albums (for the annual favourites). And I'm far from being a professional photographer. I am constantly amazed by people (both home users and businesses) who put critical data that they would be heartbroken to lose in a single vulnerable place with no backups... my Work data are backed up in even more revisions and replicas.