It's relevant. From about 1995 to 2006, Microsoft was pretty much hard set on 'cli is dumb, do nothing cli wise, cmd is a concession, but a crappy one'. As an artifact of that, you got regedit, a godawful 'GUI' that took a messy datastore model and just kept it ugly, in a way that would have been pretty much better as a CLI interface.

Microsoft started getting the idea again, but in true Microsoft fashion, had to reinvent the wheel and did PowerShell to try to create a CLI ecosystem from scratch rather than trying to build anything vaguely familiar. To their credit, for first party stuff they did a fine job enabling it, though third party applications remain a mess to this day. It does highlight that even Microsoft figured out that CLI actually does make sense a lot of the time.