It only prompts you for an update if you try to use a feature that requires it. So the scenario is flawed, given that the FIRST thing that the son is going to want to do is PLAY A FUCKING GAME.
Yes, folks, for those who forgot, this update does not prevent you whatsoever from doing the primary function you bought it for.
The overexaggeration of most of this astounds me. That's not to say that 5GB isn't a big deal, but let's be honest here: given the options of having lots of stock for launch, having minimal stock because they waited to pre-install this update, or having a less rigorously tested online experience, which would you have preferred?