Aren't they two different things? The open software community has been, in general, a big supporter of human rights, but every author or artist should be able to decide how he or she sells or gives away their creations. (Am I missing some important point?)
It depends on the DRM. If the DRM is the type that identifies and reports on the identity of the user, then it is ironic. But if the DRM is user-neutral and doesn't report back to anyone, then you are correct.
Maybe in theory, but when the DRM tracks when you're reading the book: