Well actually no. I am fluent in several shells (ksh, bash, fish, zsh) but I would not say that UNIX shells are awesome. Most of the CLI tools written for UNIX-like clones are fixing the shortcomings of shells. On the other hand you can do a lot (and I am not even fluent) with PowerShell while not needing a huge "core utils" equivalent on Windows. I used to work for a company that ported PowerShell features to UNIX so we could do lots of things that otherwise would have been impossible or very hard to do only with coreutils + shells. UNIX is old and it has many flaws but it is also wide spread and people think it is "awesome". In fact, if you look to other systems, for example VMS those had better features than UNIX (and clones). Again, I have something like 15+ years on Linux and other UNIX-like clones.
