That's complete and utter bull**** because I lived in Washington during the fall of 2012 and got to see every single game RG3 played as a rookie. He was not a dink and dunk QB. The Redskins offense was based on sucking in the linebackers with the fake run option so that receivers could open behind them for big plays down the fields. RG3 made a living throwing into completely open spaces down the field behind the linebackers but in front of the safeties.
Watson and O'Brien did something similar. They weren't attcking the middle of the field behind the linebackers but they were using the fake run options to bait the safeties and then throwing over the top of the corners on the outside because Will Fuller and DeAndre Hopkins were such big play threats on the outside. Its not exactly the same as the RG3 offense but very similar and based on similar concepts.
Neither Watson nor RG3 were doing full field reads. And both were reliant on the fake run options to open up space down the field. We found out pretty quickly that RG3's offense couldn't last long in the NFL. We'll see if this Deshaun Watson offense can.