How is he doing his job poorly? He told what is going in the next expansion and he used a phrase to be clever in his newsletter because it's his job to be able to write and speak clearly for the Destiny players and Bungie employees. Yes he is secretive some times but that's something on Bungie's end that they like to be secretive and present surprises and have been since Halo. He is trying to build up the hype for TTK by saying a little bit of what's in store but not giving it away entirely and spoiling the surprise.