Orwell did state a similar notion, "If liberty means anything at all, it means the right to tell people what they do not want to hear", in the preface to Animal Farm.
I have no idea what the (probably not Orwell, as others have pointed out) author meant if it wasn't what the words say; I assume, though, that they meant exactly what they said.
“Journalism is printing what someone else does not want printed: everything else is public relations.”