Of course this is satire. For your information, there is a tiling WM which is more radical than my preference. It's called 'ratpoison' and it literally doesn't have mouse support, by design. I don't use it because I think having mouse support is useful as a fallback, when the application can't be effectively worked with otherwise. It is for real, it's written in C was developed 2000-2017. Got any arrows left in your quiver?
I speak a language which is often considered harder to learn than Chinese. It uses latin characters but has a great deal more accumulated grammar complexity. (Spoken) Chinese doesn't scare me. Not saying this to boast - my point is that people from my country find almost all other languages easy after what they went through in school. Perspective matters.
Things change. i3 continues being popular. People will refine the idea and make it more accessible. If that catches on, you'll see more and more apps written with keyboard control in mind, initially for Linux. Other operating systems copied features from Linux in the past, like user accounts or central repositories. Web interfaces will continue to change too. Today the elderly struggle with the web, because it's so inconsistent.