Ask HN: Why isn't Scheme Shell (scsh) developed anymore?

While looking for bash scripting alternatives, I found scsh (https://scsh.net/). There's a somewhat newer continuation on GH (https://github.com/scheme/scsh).

Does anyone know the story of scsh? Did no one use it? Guile seems to be the latest option for shell scripting with Scheme, but scsh looks quite nice.