Currently the passwords app is only allowing CSV import and the csv files that are generated by enpass, 1password etc are really messy and just dont work without pretty much manually editing all the data anway - defeating the point of an import.
All the big password manages somehow manage to import and export their data pretty flawlessly. I think dropbox should be as equally easy to get data in and out of. At the moment im sticking with enpass because there is years of data i cant face editing in a new CSV file to get it inside dropbox passwords.