He is pretty much wrong with most of the article. As far as his articles go, he is swinging very, very low, no doubt the lowest quality bit of writing he has ever done. He has really lost the plot with this, reveling he has no idea about game design, it's rushed for E3, it has none of his usual wit, filled with nothing by his revelation that, yes the internet is filled with porn. When I was watching the ZombieU gameplay from the floor, even though I couldn't see the gamepad, it really rasied the tension in a very real way even when there weren't any zombies on screen.
When you have two streams of information, it is very easy to fixate on one of them when the other is far more important. Like driving when people fixate on the speedo instead of looking outside. This is where accidents happen.
In all likelihood, Ubisoft will give you a quick switch slot or 2 where you can organize some item before hand by giving you some sort of hoister slot upgrade mechanic. You start with no slots and later you get a handgun/melee hoister, some sort of rifle/long gun sling, grenade/quick item. For other items you will have to use the inventory like if you pull out a really big gun of some sort or healing item. It would give a sense good of progression of the avatars and the player. However, no doubt some idiots would scream why they don't give you that for free like every other game and misconstrue it as "False difficulty".