Interesting that TFA mentions "Minority Report-like interfaces" several times when: 1.) The Minority Report interface is the canonical example of a UI that is very impressive visually, and is beautifully mediagenic; but is hideously fatiguing and impractical in a real world scenario. (Hold your hand out at arm's length. Okay, now hold that pose for eight hours.) 2.) The MR UI has actually been commercialized, and has entirely failed to take the world by storm.
Also, computer vision demos are trivially easy to fake, and it's even easier to make an impressive demo video. You can have the guy who invented it spend a couple hours in front of the camera trying it over and over, then edit it down to three minutes of the system working perfectly. It wouldn't be nearly as impressive when you have an untrained user trying it live, in the field.