Maybe somebody should do some benchmarks of recreate versus restore database restore.
One thing I think people have found is that the database backup can get quite slow. Although Duplicati backup just uploads changes found, the database has info on everything ever seen. Depending on how scattered the database changes are, these may deduplicate very poorly…
But even if the best case can get back in business faster than DB restore, what of bad cases?
unless .dindex files don’t do full job. Speed may get a whole lot slower as .dblock files get read.
Generally I phrase this in terms of how much downtime hurts, in a disaster. Personal users can probably grumble and wait, should they be unlucky. Any users can test recreate periodically, as
Backing Up Duplicati notes. There’s a user who stopped backing up DBs as they previously did.