I do know that as far as tech support, I've had to help my girlfriend out a ton with her MacBook (curse you spinning beach ball), but the extent of support I've had to provide for her iPhone has been, "switch it off and switch it on again."
Perhaps Apple is distinguishing between full-fledged computers (for those who have the technical skill and desire to tinker) and consumer devices that are, yes, tightly controlled but less likely to get screwed up by your average person who likes to email, browse the web and watch videos.