My issue with that is that the allure of this game is hacking quickly and in reaction to events. When you're driving fast escaping cops and you want to hack the street light to slow them down, how else would you want to do that, other than holding a button? I don't think anything in the 2012 trailer or otherwise gave the impression that the impromptu hacking would be more in depth. In addition, there are more in depth hacking mini-games when infiltrating the areas.
Everything i ever saw in regards to hacking has always been look at thing ->press button -> Make thing happen
I always saw the hacking as providing a means of versatility as oppose to being the end all be all to the whole game