You underestimate the effort of doing this. We all want bash gone, but it is an essential piece of infrastructure. The introduction of dash was a huge step in

You underestimate the effort of doing this. We all want bash gone, but it is an essential piece of infrastructure. The introduction of dash was a huge step in this direction (of ditching bash). Do you want to help? Try to remove bash from the toolchain bootstrap. It is one of the lowest hanging fruits right now.