Very nicely written article.
Aside from the alpha discussion, an additional useful point is the concept of too-intelligent interfaces. This is related to two other observations. One is that for high-throughput data entry (also programming) a nice GUI is really not the thing you want. You want to be able to navigate entirely with the keyboard.
The other is wsywig document processors. Serious documentation (such as that for a fighter aircraft, which when printed out weighs more than the aircraft itself, of for documentation required by the FDA for new drugs) is not really done with wsywig editors, but markup editors of different kinds. If you document is 300,000 pages, you want the pagination to be done in batch.