This document really reminded me of the manifesto composed by Ted Kaczynski (The Unabomber). His manifesto “Industrial Society and It’s Future” seems similar in language to this one. The ideas expressed are vastly different, but as you said, “there’s a degree of insane ranting there.”

People are obsessed with their stupid GUIs. I use my keyboard 90% of the time and people look at me like I’m missing my head when I use my keyboard to navigate my PC.