> nor is it an implication that it’s for power-users.

Yes it is. As an administrator being a CLI tool means that I can automate configs and deployment with ansible or Nix OS. I would argue doing these sorts of automation what are what “power-users” would do.

GUI’s often lack any sort of automation capability or have some half-cocked API that usually lacks features or endpoints that would be trivial if the thing was just a CLI tool with a config file.