That sounds like a symptom of simply being more familiar with the Windows environment. People who have grown up in China probably find chopsticks simpler and more powerful than forks -- I'm hypothesizing -- but not because forks don't work.
I wouldn't say so. I would kill for a halfway decent Ruby shell. On Windows I'd be going on about the power of .net and on nix I'd be promoting how awesome having the power of gems in my shell is. Powershell really is quite good and blows sh/bash/zsh out of the water. The "everything is an object" model instead of passing around strings really changes how you work.
I know far more about scripting linux/unix than Powershell, so I can't really speak directly to Powershell's strengths and weaknesses. But there's reason to be skeptical that Powershell has actually blown bash out of the water, I think. If it made that much difference, linux/unix would have adopted Powershell's object paradigm for itself.
I'm not sold on Ruby gems. I haven't learned Ruby yet. Shell scripting to me means bash (or /bin/sh) + whatever utilities come standard on a unix system: sed, awk, etc.
The goals may be slightly different, reflecting the different cultures using the shells. What I think is cool about bash scripting is that I use bash constantly, anyway, which makes it easy to test small script fragments before including them in a full-on script, and even though, e.g., some things are nasty to do syntactically in bash, I get lots of practice.
