Correct me if i'm wrong, but for a remote Borgbackup you need to be able to create the full backup on your local drive, and only then you can upload it to your server (unless you are able to run something like an ssh-server on the server-side, which you can't with a lot of cloud storage services.)

With rclone, you can simply upload without having to create a full local 'snapshot' of the 'files-to-upload' first.

Ah sorry, I did not catch that you were talking about pure cloud storage solutions.

Yes, I have a remote VM where I can ssh and use it as a borg server.

The advantage I see in this vs a copy of the repo is that I have two independent backups. If one fails for some reason (defective disk for instance) then I do not copy a faulty backup further.