One of their guys on Reddit said that they intentionally don't offer it because they don't want to attract the datahoarder crowd.

I've been very happy with Borg[0] combined with the B2 command-line tools for Linux backups. I switched from Duplicity + AWS and it reduced the cost as well as made the backup process simpler - Borg doesn't have the same full vs incremental difference to think about, you just take a full backup each time and it dedupes everything automatically.

0: https://borgbackup.readthedocs.io/en/stable/

For my use I'm primarily concerned with an off-site copie of a folder full of files (mainly pictures/videos), so the basic sync works just fine for my case. It even keeps versions of files [1] in case you corrupt/delete/overwrite a file.

What is it missing that Crashplan and Backblaze Personal Backup have?

$5/mo of B2 is about 1TB of storage, so if you're above that then maybe cost is a factor?

[1] https://www.backblaze.com/b2/docs/file_versions.html

Same. I'm in the crashplan soon to be migrating boat and can't use Backblaze for that same reason.

I'm currently testing 'rclone' with the backblaze b2 backend (+crypt).

Seems to work OK so far. Won't be as cheap as their unlimited plan but I'm OK with that.

Duplicacy + B2 works great, though.