Isn't tying ones self worth to others opinion a bit dangerous. There's always going to be people who don't like you/think you provide value etc. It's surely not healthy to rely on others for your self esteem, or to define who you are. This is only a small point from the article but I thought it important to question.
Just from getting some friends to do this it seems to me the median score overall and the median score for each age are a bit inflated. Just my thoughts, but I think people aren't being 100% truthful. Although I may just have a poor vocabulary http://testyourvocab.com/?r=36208
I agree that computers could be simpler but I don't really agree with the car metaphor. A car may be complex to build but in the end it has one main function to get you from point A to B. In comparison a computer has almost limitless functionality. It's important for computers to be accessible to all but I don't think limiting their use is the way to go.