I think your comment on perceptions of gamers misses the point that "gamers" are people who spend lots of time playing video games. The research on the wikipedia page isn't about "gamers". It's about people who play video games at some level of frequency, which is a much broader category. This is why our intuitions about "gamers" turn out to be accurate, even though they are not consistent with the data about the much larger category of "people who play video games".