After rereading parts of the article, I concede your point. He is hating on width, but he also complains about lack of vertical height. I may have been sleeping when I read it the first time.
"The astute reader will point out that there are many 15″ notebooks out there that feature 1920×1200 LCD’s. To this, I will refer you to my previous point: that widescreen sucks for software development and most business purposes."
First, I'll mirror my distaste for the lack of 1200 height screens. I recently purchased a laptop and had to settle for a 1080 screen over a 1200 due to the exorbitant prices. Disguisted.
However, I've been programming for 23 years and I love the wide format. I can comfortably fit two columns of code if I wish, or one column with room for other apps on the side (IM, my taskbar to the right, reference material, etc.).
Complaining because your screen is too wide makes no sense. Stop maximizing everything.
Respect.