I strongly disagree, and I think your example actually supports this position. Most people don't modify their cars at all, but for the people that do find great pleasure in it. We see this with software, too. I think that opposing people who would like to mess with the things they use is limiting and fundamentally somewhat disappointing. It's essentially impossible to make software that caters to everyone's needs, but I think the best you can do is make something that works for most people out-of-the-box and let the few people who want to tweak things to their liking themselves. (To extend your analogy, I don’t know the first thing about cars but I have very few complaints with mine. If I didn’t like something about it, locking me out from changing it prevents me from taking it to my car-enthusiast friend.)