Rclone crypt is not much related to Borg. That’s a tool for copying files from one machine to another, in this case encrypting before copying. That’s rsync, working with cloud.
Borg is a different tool, for backup. It deduplicates, encrypts, snapshots, checksums, compresses, … source directories into a single repository. It doesn’t work with files, rather blocks of data. It includes commands for repository management, like searching data, pruning or merging snapshots, etc. You will then transfer or sync the repository to wherever you want, with a tool such as rsync/SSH or rclone. Rclone is now natively supported, so that you don’t need to store the repository locally and on remote, rather back up directly to remote.
Borg is a different tool, for backup. It deduplicates, encrypts, snapshots, checksums, compresses, … source directories into a single repository. It doesn’t work with files, rather blocks of data. It includes commands for repository management, like searching data, pruning or merging snapshots, etc. You will then transfer or sync the repository to wherever you want, with a tool such as rsync/SSH or rclone. Rclone is now natively supported, so that you don’t need to store the repository locally and on remote, rather back up directly to remote.