I agree with you and the confusion which may arise with linux file system's nomenclature if one isn't used to it. However how many non tech-savy people would venture outside of /home? In my experience, a lot of people I know have no idea of what C: is and usually browse trough the usual documents, music, downloads and so on; in this case a user's home folder would virtually give them the same experience. If someone wants to go a little bit deeper, at one point has to understand that we are talking about different OSes and cannot expect everything to be 100% the same and should start learning what those differences are.