I've used PowerShell quite a bit actually, even wrote a few script a couple years ago to work with Active Directory. I still can't see myself managing a server from there. I know configurations and everything are possible through it, like the registry and such. However config files are just so much more friendly to me. Which is probably why I would pick Linux on that. Permissions are also a little bit more basic and harder to screw up in Linux IMO.

It's try-able. But tell me how to setup and configure IIS ARR as a reverse proxy without using the GUI.

SQL Server is probably the best case, since the UI is a wrapper around TSQL and they expose the scripts at any point.

Then there's fun stuff. Like Invoke-WebRequest going super slow because it has a terribly implemented progress bar. That's right: out of the box, you can't download files with the shipped downloader, because it shows progress (like curl) and increases transfer times by a couple orders of magnitude. Come on.

Oh, do you work for SO Brent?