> Completely agree. One of the problems is of course the freedom of choice a Unix system gives you.

This is because Unix (or large parts of the environment) evolved over time rather than being designed at the beginning.

We started with the Bourne shell, then got the C shell, with the Korn shell splitting the difference between the two. Bash then came along taking lessons from each of those three, and then Z shell.

That's a few decades' worth of changes.