More than a question of who wrote what or who owns the system or who deserves credit for the system, IMHO the point of calling it GNU/Linux instead of just
Linux is that a lot of
users have never realized about the important role that the
FSF and the
GNU project have played in the
free software movement.
By saying GNU in the name of the system people will want to know what is GNU and then will find out about the GNU philosophy, which is very important to stop having them thinking about free beer and start having them think in freedom of speech.