I've been reading more of his stuff lately. Maybe he'll come back into fashion.
Orwell's distinction between patriotism and nationalism is valid. The nationalist often doesn't have much love for his actual country. But this was a distinction that Orwell had to work out for himself. For many of those who came afterwards this distinction has been just be a way of making an easy condemnation of those one disagrees with -- more armament for political argument than something to really reflect upon.
That happens to a lot of interesting thought.