Remember, there is no such thing as “the cloud”, just someone else’s computer. Whether that computer is owned by Apple, Google, or whoever, it’s not yours. Yes, if you delete a file from the cloud, it should be deleted, period; Apple will have to answer for that. But if you’re saving your personal photos in “the cloud” just know that your photos are out there. Never trust any cloud service for storing personal files. I keep all my files and photos saved either on device, or on my home NAS, with several backups in place.