I don't agree that GUIs are a replacement for the CLI. Yes in the past that is all we had, but really they are completely different and should be considered in parallel. CLIs were never really meant for non-technical users though as far as I'm aware, or at least the end user was already expected to have some kind of established context. I'm not really against exploration in this area but I disagree that CLIs are flawed. I'm biased of course, excuse me while I get back to my UNIX/xterm/tmux/vim development environment.

EDIT: I would like to point out that I've only been in the industry for 6/7 years so it's not like I started my career where this established environment was the only choice.