I agree. It uses the term "tech" in the article and fails to mention everything that isn't graphics related. Even if you decide as a game maker to forgo 3D for whatever reason, you still have REAL technical limitations when it comes to the game mechanics. Physics, AI, and Feature X can cost just as much processing power as some fancy 3D graphics, regardless of whether it is realtime or not. Major game makers already know this fact, and that is why optimization of the tech isn't optional: not doing so means there is a lot less you can actually do.