Compare Ubuntu and MacOS. MacOS ships ancient version of Bash because its GPL2 which allows for coexistence with proprietary software on sold machines.
So if Ubuntu gets rid of GNU coreutils and sudo what else stays GPL3 on a barebones system? You can swap Bash with Zsh like Apple did. And just like that you got yourself a corpo friendly distro to ship proprietary software. Just like Android, and look where that got us.