I took Mindstorms to be more about a necessity-driven approach to learning. I would guess you're right: not everyone will find Logo interesting. But I think that everyone has something they want to do and are currently incapable of doing. I thought that Papert was using Logo to show how a general education can occur in the process of acquiring that desired capability. In the context of Mindstorms, this was always a new capability as a Logo programmer, e.g. being able to draw flowers. But I thought the more fundamental point was that people will acquire generaly applicable knowledge through the pursuit of some specific and sometimes (seemingly) trivial skill. This principle isn't contingent on using Logo for anything.