Of course he is. His documents have already provided huge benefit to the public. Are we really going to nitpick over every single document from the hundreds of thousands and go "Aha! this document
probably shouldn't have been leaked - he's totally a traitor now"?
I'm sure there were documents in the Pentagon Papers which probably shouldn't have been made public, too. Looking back, was that relevant to the larger cause of informing the public about the Vietnam war's lies?