I think GAF remains a forum that is disproportionately focused on graphically impressive, single player, story driven games. Not everyone, mind you (for example, not me), but a larger portion than is present in the gaming populace generally.
The gradual, relentless encroachment of casual gaming (and associated antiquated graphics), alternative input methods (not just Wii and Kinect, but iPhone/Android also), and the focus on social gaming and multiplayer is simply foreign and unappealing to a lot of members on this forum.
That is neither criticism nor praise; it is simply an observation. Everyone is welcome to their own gaming tastes.