Linux is not in the public domain. Linux is a cancer that attaches itself in an intellectual property sense to everything it touches. That's the way that the license works.
Bio: Carlos Filipe Ximenes Belo is an East Timorese Roman Catholic bishop. Along with José Ramos-Horta, he received the 1996 Nobel Peace Prize for work "towards a just and peaceful solution to the conflict in East Timor."