Somewhere along the road, lifehacking became focused more on productivity and less on pleasure. That's when I stopped reading Lifehacker. I know Merlin Mann had a semi-meltdown of a similar sort two years ago.
Zen Habits once really irritated me - it was list-based and monotonous - but for the last year it's really been a great source of occasional reading and relaxation. This article in particular was terrific.
The important things to remember when reading books like Getting Things Done and 4 Hour Work Week is that they are not written specifically for you. If you read them, take the advice that fit /your/ life from them - then they're pretty good books.
I read this article as basically: If you feel unproductive at times then don't panic. Which seems like good advice.
Reading it and getting mad because it wasn't exactly what you hoped is not very zen. :)
There is still much waiting to be said to fight back against the lifehacking, GTD, how to work for only 4 hours a week by being a giant dick and how to convert all of your farts into actionable GasHacks and become more productive by making sure you never have an original thought again movement. It is not said by productivity bloggers with a shitty book to hawk.