I agree with this statement somewhat but 3D would probably screw us with the immersion till everyone got used to actually seeing shit come at them lol.
3D gaming doesn't involve things trying to pop out of the screen at you, or at least it won't for good games. Like bad 3D movies, I'm sure crappy games will try to do that too. But it makes the screen seem more like a window than a flat display. It's hard to explain without seeing it.
If you have glasses and can remember it, it's kind of like the first time you ever got them - you probably never noticed how much you were missing until you put them on and saw what everything should look like. It's very impressive when you see it in action though - it's a subtle effect that you really notice when it's not there.