I don't get it. I'm with you that they shouldn't have needed to unmask Flynn because they already knew it was Flynn, but the document that was released by the DNI was literally in response to a request "of any officials who submitted requests to the National Security Agency at any point between 8 November 2016 and 31 January 2017, to unmask the identity of former National Security Advisor, Lieutenant General Michael T. Flynn."
They 100% unmasked him. Unless DNI is providing bullshit documents.