I remember Obnam being retired in 2017[0]. I was evaluating backup systems back then, and went to borg (and later to restic). But turns out, it came back 2020. I like the motivation [1]:
> Borg and Restic are both fine backup programs. I've been using Borg for a while. The point here for me is that I find implementing backup systems to be a fascinating hobby. Thus, I want to write my own. The act of developing being the point more than having something I can use myself. Everyone else should use something battle-tested, unless they want to help me build something they'd like to use themselves.