rclone is rsync-on-steroids, and you can use it for backups, but it's not the same shape of tool as the above tools. It's effectively "copy these files from $here to $there" where $here and $there are any cloud provider or network filesystem. It's got a built-in encryption layer and some other bits, but you'd still be responsible for ensuring $there is actually $there/backups/(date +%F) or whatever.

I'd treat it as a tool in a bigger backup system (which is roughly what rdedup does with it).

Rclone is not a backup system, it is a sync system. It does not do any archiving, deduplication, pruning, etc. It just syncs two directories (with possible encryption added on top). It can be efficiently utilized as an extra final step in a backup plan.