Correlation =/= causation. Gaming is a refuge for these shut-ins because they have a feeling that they are chanceless in todays society in general and in competition for women in particular. That's their words not mine, people don't just forget how to have a fullfilling live because of video games.
Whats wrong with playing and enjoying video games? It seems like just another hobby to me, nothing to be ashamed about, maybe i have misunderstood your post.