I should have been clearer, I meant that it didn’t work with arbitrary cloud storage providers like iCloud, Dropbox, Google Drive and so on.

I’m a tech person and even I don’t want to be responsible for running a Vaultwarden server, the average user definitely doesn’t want to.

Doesn't that mean that at least in theory, if Bitwarden became too abusive an alternative host would crop which you could switch to?