This is terrifying. Aren't Backblaze users paying per-GB of storage/transfer? Why should it matter what's being stored, as long as the user is paying the costs? This will absolutely result in permanent data loss for some subset of their users.

I hope Backblaze responds to this with a "we're sorry and we've fixed this."

I think the author is referring to the personal backup plan [1] which has a fixed monthly amount

[1] https://www.backblaze.com/cloud-backup/personal