> Everything is a string is a great way to reduce the mental load about typing.

I feel almost the exact opposite way...

Everything is a string means I have to "know" whether any given function takes {a single element, a list of elements, a glob, a list of globs, ???}.

When I inevitably mess it up, I don't get any help at all from the language. In the best case, I'll hit a run-time error and figure it out. In the worst case, my program will just do some random thing that isn't what I wanted, and I'll get to debug it.