The rust community leadership made a strategic decision to pick 4 areas to suggest focus on. CLIs was one of them. (Scroll to “build it in rust” on https://www.rust-lang.org/)
I think this choice and many others by the rust leadership merit a case study in community technical leadership. Or at least a blog post by the author of https://www.kalzumeus.com/2014/04/09/what-heartbleed-can-tea...