Yahtzee can be funny and does make some good points*, but dude's got some weird opinions on multiplayer. Some games are just meant to be played with other people, guy! That doesn't make them any less valid!
Also he acts like games devoid of story have no "staying power," which makes a lot of sense since everyone knows the plot found in Tetris is one of the greatest epics ever written.
(* I do find it kind of hilarious when he states the obvious as if it's some intelligent revelation, though. "Hey guys! I just realized why people like zombie stories! Zombies are a common enemy everyone can rally against and there's no guilt in killing them!" Uh... no crap?)