I guess one can say that 25 years later this has been shown as (partly) wrong.

I don't think Powershell really solves a problem, it's too complex to work with for the majority of problems. If i want complex data handling i write a script and put #!/usr/bin/env {bash,python,perl} in the first line.

I think the missing point here is that the nice, line-based, really simple approach is that this is how we speak and write and think. (in a series of flat words, so to speak). It's extremely easy to get into this kind of handling "data" and it's sufficient for a lot of tasks. I always admired what can be done with one line of bash/GNU utils.

As i said: If it get's more complex, we use a "real" programming language with more complex data structures anyway.