I think the point stands in relation to single player games. Sure you're more isolated from the real world in VR but the entire point of SP games is to immerse you in a virtual world and thus by extension separate you from the real world. I'm sure we all understand (and more importantly so do our partners) how disconnected from the real world we become when we play a good single player game. The step from that to playing in VR isn't really huge. And if you're on your own while playing - which frankly, most people are when they play single player games, the difference is basically non existent.