If you are backing your photos up to iCloud and you're running out of space, of course you will get a notification. Just disable Photos sync to iCloud if you rely on another cloud like Google Photos
I cannot even use Google Photos in the same way that I use iCloud.
With iCloud I can set the system up to only retain low-resolution versions and only fetch high-quality when needed.
I can't do that with Google Photos. ANY app that requires me to open a photo opens up with the standard iOS photo viewer which does not allow anything. I can't even write an integration for iOS photos so I can browse my NAS, or Google Photos or DropBox or whatever.
