

The one enabling people to understand and use their devices on their own. Once you can use a mouse or touchpad, you can navigate the UI. Good UI/UX conveys function. Checkboxes insert the correct configuration in the background without possibly hazardous typos.
The CLI does nothing of this for the user, to understand it users have to invest tens, if not hundreds of hours before they get a hang of all essential commands, paradigms and tools to help themselves. They have to become IT intermediates just to use their computers.
By providing a single CLI command (which, in the worst case, gets copied by a third user on an incompatible system configuration breaking everything) instead of pointing at the GUI tools most user-friendly distros already provide you do, in many cases, a disservice to the average user who just wants their problem to be fixed. They will not be able to help themselves next time for a similar issue.
Too many people expect you to know and understand gnu-utils and all the common config file, filesystem and folder structure paradigms though. Which is the problem.