I think it would be easy to change and accomodate the other 90%. The root of the problem is the whole mentality of the people behind it. You see it in arch users. I'ts about superiority, not making the world a better place with solutions that can benefit everyone. It is enough that they can use the terminal, and it doesn't matter that in every other OS, using the terminal is reserved for really outlandish and extreme situations, not for normal usage, where an internationally recognizeable button and a windows with instant and extensive feedback would do the trick.

More gui, having a standard installer, and finally making a working 7th application level iptables gui whitelist firewall. Those things would mean so much. Just GUI. Why would anyone want to google something for haljf an hour and read man pages when he can just click a toggle in options while the program gives him visual feedback on what he is doing? Nothing worse than inputting a command and the terminal not giving any feedback. Did it work? Did it not? What did I do? How to see the status of the whole thing? No one knows. So why would anyone dare change any options in such an environment?