In addition to commands that can wipe your drive (and possibly your mainboard), screw up things like fstab and boot to tty, there's also the issue of people using sudo + text editor to edit files.
The proper way is using sudoedit.
Sudoedit uses a temporary file to make changes, so it's not edited by the root user reducing the risk of accidental damage to critical files. If something goes wrong during editing, the original file remains intact. It also maintains the permissions of the edited file.
New Linux users aren't likely to know better, so the advice of 'just use CLI' is pretty ignorant.
