The only thing I can think of is if you have an existing system you are integrating with thats implemented in shell script already - for example a packaging or build pack system; but I can’t really see how this could be justified even there because this could easily be a toy that becomes abandoned.
A really common use case is install/bootstrap/setup scripts. You know, those sketchy curl-to-bash things, or cloud-init scripts, or whatever you run to set up your actual higher level tools like Python.
