Trust me, I love PowerShell (disclaimer that I worked on it) but in MacOS it's an add-on not a first class citizen, and I think there are fundamental principles

Trust me, I love PowerShell (disclaimer that I worked on it) but in MacOS it's an add-on not a first class citizen, and I think there are fundamental principles that can be picked up by other shells. In fact, the PowerShell cmdlets are expressive enough in their metadata that they can be run by other shells easily.