From the article you quoted: “Maybe, as this contrast heightens, Apple will see the light; maybe instead of fighting jailbreakers, they will offer jailbreaking and sideloading as an option for power users out of the box, just as Android does. “
Up until now you couldn’t sideload an app onto your iPhone unless you had a developer license. At least as far as I knew you couldn’t. The new Xcode 7 allows it.
Side loading apps and other data from OS X is how syncing works. The apps which are stored on iTunes on your OS X computer can be re-installed or even installed from there, if they were downloaded there. It requires a valid AppleID on both devices, and proper handshaking between the devices. It is not as easy as you seem to think. It has always been there.