Yes - my phone adds all the photos I take to Apple's Photos and to Dropbox (and Google Photos).
I treat Dropbox as the source of truth - and Photos + Google Photos as just useful copies (Photos so I can browse my photos nicely and Google Photos so I can search then nicely).
I have Dropbox installed on a machine with a large enough drive to sync it all locally. I leave Backblaze backup running on there to keep a proper backup of Dropbox to their cloud. I also make physical backups of this Dropbox sync every so often to cheap spinning disks - and store them away safely.
The only things that aren't automatic here are the physical copies every year or so, and occasionally opening Dropbox on my phone to check it seems to be happily syncing.
I treat Dropbox as the source of truth - and Photos + Google Photos as just useful copies (Photos so I can browse my photos nicely and Google Photos so I can search then nicely).
I have Dropbox installed on a machine with a large enough drive to sync it all locally. I leave Backblaze backup running on there to keep a proper backup of Dropbox to their cloud. I also make physical backups of this Dropbox sync every so often to cheap spinning disks - and store them away safely.
The only things that aren't automatic here are the physical copies every year or so, and occasionally opening Dropbox on my phone to check it seems to be happily syncing.