Jim Baker said something like this once about the first gulf war, once. He learned never to say this again, publicly.
I think there's a certain stripe of elite person who finds it almost irresistible to say things like "this was about oil", because they think it will make them sound smart.
I think most people got this idea from that '70s movie Three Days of the Condor. Robert Redford totally sounded smart when he said it in that movie. It's fun to be smart and worldly-wise about stuff, like Robert Redford was in that movie.