I have to agree with this. I tried to switch to some Linux and Open Office distribution a few years ago, and the kind of things I had to learn to do to get that machine running, and then to fix several driver problems, were a bit too much for anybody without a lot of technical expertise.
I have several friends that are in love with Linux and Open Office, but they all happen to be software engineers, and when I complain about something not being user-friendly, they tell me that it's really very easy, you just have to "mount this drive and then ...." do you really think users are going to consider introducing linux commands, ever?
If you believe users should know this stuff, then you just don't live in the real world.