HN has a tremendous reach these days, from pioneers in the field to total (and often clueless) newbies. Fogus felt compelled to write down his thoughts, someone else saw fit to post it and as of this moment 100+ people thought it was useful enough to vote it up. If that's not validation enough for you then remember that time when you spent half a day tracking down an endless loop and you had to ask a more seasoned programmer to point it out to you.
Fogus is a respected member of the community because he tends to write down what he thinks in a way that others much further down on the totem pole can grasp it too, his articles are not upvoted because he's 'well known' but mostly because people find them useful.
If you feel like this article was 'devoid of content' or whatever slur you feel like directing at it then please, write a better one.