For many years, they were consistently and very diplomatically saying that they had no plans to offer Backblaze Personal Backup to Linux users, because Linux users would use a disproportionately large amount of storage and it wouldn't make sense to offer them a flat-rate alternative to the pay-per-GB B2 option.
Which is fine and all, but then you're paying per gb/month. Depending on how much you want to back up, it can cost you a lot more than the personal plan.