Seems an interesting idea, but it's implemented in Python, which means it will never replace bash and probably not achieve any significant adoption unless they

Seems an interesting idea, but it's implemented in Python, which means it will never replace bash and probably not achieve any significant adoption unless they rewrite it in Rust first (which they should have written it in to begin with since they started in 2016). The reasons for that are that shells must start very quickly (due to subshells, local ssh, etc.), be fast, have no complex dependencies since they are used to recover broken systems, be portable but also with full support for OS semantics and be written in a language that allows rapid development of robust software, none of which Python does well.