LR Backup
I seem to recall that when I installed LR on my first iPad Pro, i had to explicitly disable the iCloud backup because it meant I was doing the backup up twice - to iCloud and to the Adobe repositories - which due to the way LR manages local storage with the Adobe cloud sync was also pointless.
I feel for the people who’ve lost their work like this but if disabling the backup to iCloud has some part of their loss then I’m not totally sympathetic to their plight.