I remember reading that piece, and found it to be interesting and accurate, but somewhat irrelevant. Most people just don't care about latency that much. If we go back to an ancestor high up in this thread, "low latency input and display" is not a goal of computing. "Enabling people to do things they find useful and/or have value" is the goal. And it just turns out that, for most tasks -- even most
gaming tasks (or other things where you might say "low latency is important") -- low latency just is nowhere near as important as just being able to do these things at all.
Sure, we might sometimes notice the latency and find it vaguely annoying, but we put up with it because modern computing (with all the attendant "complexity" or whatever that makes low-latency hard) enables us to do things that computers of 20 or 30 or 40 years ago were just completely incapable of doing.
And for the people who really do care about low latency, they can usually build something custom that gets them where they want to be -- as Dan Luu points out in his piece.