Sorry I'm not sure I understand what it is you think I'm missing. It's FOSS, works on Linux, has a CLI, works for both files and directories... please enlighten me what I got wrong?
It's got CLI too - alright. But is it any de-facto, mature, well-known, widely used? What gurantees that it's as secure as openssl or gpg? It might have plenty of bugs and vulnerabilies.