Computers are becoming more and more essential to our lives, so deliberately dumbing them down is a disservice to everyone, who should be learning more not less about how computers work.
My dad was in sales. My first exposure to computers was when he bought an Apple II way back in the day. He used VisiCalc, naturally, the "killer app" for the Apple II. Was he a "power user" or a "normal person"? I'd say both!